Home / 525,871,916.20-788,807,874.30-505,783,446.40

Finding the Fourth Proportional to 525,871,916.20, 788,807,874.30 and 505,783,446.40

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Solution

The fourth proportional to 525,871,916.20, 788,807,874.30 and 505,783,446.40 is: 758,675,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,871,916.20 : 788,807,874.30 = 505,783,446.40 : x
  2. Step 2: Convert to fraction form
    525,871,916.20/788,807,874.30 = 505,783,446.40/x
  3. Step 3: Cross multiply
    525,871,916.20x = 788,807,874.30 × 505,783,446.40
  4. Step 4: Simplify right side
    525,871,916.20x = 398,965,965,210,911,936
  5. Step 5: Solve for x
    x = 398,965,965,210,911,936/525,871,916.20
  6. Step 6: Final answer
    x = 758,675,169.60

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Half scale
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Double scale
Find fourth proportional to 525,871,917.20, 788,807,875.80 and 505,783,447.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.