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Finding the Fourth Proportional to 723,589.71, 998,613.66 and 401,403.90

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Solution

The fourth proportional to 723,589.71, 998,613.66 and 401,403.90 is: 553,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,589.71 : 998,613.66 = 401,403.90 : x
  2. Step 2: Convert to fraction form
    723,589.71/998,613.66 = 401,403.90/x
  3. Step 3: Cross multiply
    723,589.71x = 998,613.66 × 401,403.90
  4. Step 4: Simplify right side
    723,589.71x = 400,847,417,717.27
  5. Step 5: Solve for x
    x = 400,847,417,717.27/723,589.71
  6. Step 6: Final answer
    x = 553,970.59

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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.