Home / 637,335.04-879,157.92-398,456.32

Finding the Fourth Proportional to 637,335.04, 879,157.92 and 398,456.32

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Solution

The fourth proportional to 637,335.04, 879,157.92 and 398,456.32 is: 549,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,335.04 : 879,157.92 = 398,456.32 : x
  2. Step 2: Convert to fraction form
    637,335.04/879,157.92 = 398,456.32/x
  3. Step 3: Cross multiply
    637,335.04x = 879,157.92 × 398,456.32
  4. Step 4: Simplify right side
    637,335.04x = 350,306,029,502.05
  5. Step 5: Solve for x
    x = 350,306,029,502.05/637,335.04
  6. Step 6: Final answer
    x = 549,641.88

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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.