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Finding the Fourth Proportional to 522,068.40, 783,102.60 and 389,208.15

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Solution

The fourth proportional to 522,068.40, 783,102.60 and 389,208.15 is: 583,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,068.40 : 783,102.60 = 389,208.15 : x
  2. Step 2: Convert to fraction form
    522,068.40/783,102.60 = 389,208.15/x
  3. Step 3: Cross multiply
    522,068.40x = 783,102.60 × 389,208.15
  4. Step 4: Simplify right side
    522,068.40x = 304,789,914,206.19
  5. Step 5: Solve for x
    x = 304,789,914,206.19/522,068.40
  6. Step 6: Final answer
    x = 583,812.23

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Double scale
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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.