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Finding the Fourth Proportional to 631,056.61, 870,854.65 and 344,574.66

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Solution

The fourth proportional to 631,056.61, 870,854.65 and 344,574.66 is: 475,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,056.61 : 870,854.65 = 344,574.66 : x
  2. Step 2: Convert to fraction form
    631,056.61/870,854.65 = 344,574.66/x
  3. Step 3: Cross multiply
    631,056.61x = 870,854.65 × 344,574.66
  4. Step 4: Simplify right side
    631,056.61x = 300,074,444,933.17
  5. Step 5: Solve for x
    x = 300,074,444,933.17/631,056.61
  6. Step 6: Final answer
    x = 475,511.14

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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.