Home / 525,871,917.20-788,807,875.80-505,783,447.40

Finding the Fourth Proportional to 525,871,917.20, 788,807,875.80 and 505,783,447.40

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Solution

The fourth proportional to 525,871,917.20, 788,807,875.80 and 505,783,447.40 is: 758,675,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,871,917.20 : 788,807,875.80 = 505,783,447.40 : x
  2. Step 2: Convert to fraction form
    525,871,917.20/788,807,875.80 = 505,783,447.40/x
  3. Step 3: Cross multiply
    525,871,917.20x = 788,807,875.80 × 505,783,447.40
  4. Step 4: Simplify right side
    525,871,917.20x = 398,965,966,758,395,008
  5. Step 5: Solve for x
    x = 398,965,966,758,395,008/525,871,917.20
  6. Step 6: Final answer
    x = 758,675,171.10

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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.