Home / 724,537.20-999,865.71-397,864.20

Finding the Fourth Proportional to 724,537.20, 999,865.71 and 397,864.20

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Solution

The fourth proportional to 724,537.20, 999,865.71 and 397,864.20 is: 549,055.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,537.20 : 999,865.71 = 397,864.20 : x
  2. Step 2: Convert to fraction form
    724,537.20/999,865.71 = 397,864.20/x
  3. Step 3: Cross multiply
    724,537.20x = 999,865.71 × 397,864.20
  4. Step 4: Simplify right side
    724,537.20x = 397,810,770,816.58
  5. Step 5: Solve for x
    x = 397,810,770,816.58/724,537.20
  6. Step 6: Final answer
    x = 549,055.00

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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.