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Finding the Fourth Proportional to 486,892.80, 730,339.20 and 368,794.80

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Solution

The fourth proportional to 486,892.80, 730,339.20 and 368,794.80 is: 553,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,892.80 : 730,339.20 = 368,794.80 : x
  2. Step 2: Convert to fraction form
    486,892.80/730,339.20 = 368,794.80/x
  3. Step 3: Cross multiply
    486,892.80x = 730,339.20 × 368,794.80
  4. Step 4: Simplify right side
    486,892.80x = 269,345,299,196.16
  5. Step 5: Solve for x
    x = 269,345,299,196.16/486,892.80
  6. Step 6: Final answer
    x = 553,192.20

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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.