Home / 728,720.52-1,005,631.02-402,024.60

Finding the Fourth Proportional to 728,720.52, 1,005,631.02 and 402,024.60

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Solution

The fourth proportional to 728,720.52, 1,005,631.02 and 402,024.60 is: 554,792.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,720.52 : 1,005,631.02 = 402,024.60 : x
  2. Step 2: Convert to fraction form
    728,720.52/1,005,631.02 = 402,024.60/x
  3. Step 3: Cross multiply
    728,720.52x = 1,005,631.02 × 402,024.60
  4. Step 4: Simplify right side
    728,720.52x = 404,288,408,563.09
  5. Step 5: Solve for x
    x = 404,288,408,563.09/728,720.52
  6. Step 6: Final answer
    x = 554,792.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.