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Finding the Fourth Proportional to 724,167.17, 999,384.78 and 401,879.93

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Solution

The fourth proportional to 724,167.17, 999,384.78 and 401,879.93 is: 554,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,167.17 : 999,384.78 = 401,879.93 : x
  2. Step 2: Convert to fraction form
    724,167.17/999,384.78 = 401,879.93/x
  3. Step 3: Cross multiply
    724,167.17x = 999,384.78 × 401,879.93
  4. Step 4: Simplify right side
    724,167.17x = 401,632,685,429.47
  5. Step 5: Solve for x
    x = 401,632,685,429.47/724,167.17
  6. Step 6: Final answer
    x = 554,613.22

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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.