Home / 485,786.16-723,850.02-432,788.40

Finding the Fourth Proportional to 485,786.16, 723,850.02 and 432,788.40

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Solution

The fourth proportional to 485,786.16, 723,850.02 and 432,788.40 is: 644,880.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,786.16 : 723,850.02 = 432,788.40 : x
  2. Step 2: Convert to fraction form
    485,786.16/723,850.02 = 432,788.40/x
  3. Step 3: Cross multiply
    485,786.16x = 723,850.02 × 432,788.40
  4. Step 4: Simplify right side
    485,786.16x = 313,273,891,995.77
  5. Step 5: Solve for x
    x = 313,273,891,995.77/485,786.16
  6. Step 6: Final answer
    x = 644,880.23

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.