Home / 720,250.10-993,943.09-397,957.90

Finding the Fourth Proportional to 720,250.10, 993,943.09 and 397,957.90

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Solution

The fourth proportional to 720,250.10, 993,943.09 and 397,957.90 is: 549,180.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,250.10 : 993,943.09 = 397,957.90 : x
  2. Step 2: Convert to fraction form
    720,250.10/993,943.09 = 397,957.90/x
  3. Step 3: Cross multiply
    720,250.10x = 993,943.09 × 397,957.90
  4. Step 4: Simplify right side
    720,250.10x = 395,547,504,815.91
  5. Step 5: Solve for x
    x = 395,547,504,815.91/720,250.10
  6. Step 6: Final answer
    x = 549,180.77

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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.