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Finding the Fourth Proportional to 497,646.80, 746,470.20 and 438,549.20

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Solution

The fourth proportional to 497,646.80, 746,470.20 and 438,549.20 is: 657,823.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,646.80 : 746,470.20 = 438,549.20 : x
  2. Step 2: Convert to fraction form
    497,646.80/746,470.20 = 438,549.20/x
  3. Step 3: Cross multiply
    497,646.80x = 746,470.20 × 438,549.20
  4. Step 4: Simplify right side
    497,646.80x = 327,363,909,033.84
  5. Step 5: Solve for x
    x = 327,363,909,033.84/497,646.80
  6. Step 6: Final answer
    x = 657,823.80

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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.