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Finding the Fourth Proportional to 631,064.62, 870,981.42 and 372,930.58

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Solution

The fourth proportional to 631,064.62, 870,981.42 and 372,930.58 is: 514,710.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,064.62 : 870,981.42 = 372,930.58 : x
  2. Step 2: Convert to fraction form
    631,064.62/870,981.42 = 372,930.58/x
  3. Step 3: Cross multiply
    631,064.62x = 870,981.42 × 372,930.58
  4. Step 4: Simplify right side
    631,064.62x = 324,815,606,129.82
  5. Step 5: Solve for x
    x = 324,815,606,129.82/631,064.62
  6. Step 6: Final answer
    x = 514,710.53

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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.