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Finding the Fourth Proportional to 378,622.34, 522,691.64 and 292,387.71

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Solution

The fourth proportional to 378,622.34, 522,691.64 and 292,387.71 is: 403,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,622.34 : 522,691.64 = 292,387.71 : x
  2. Step 2: Convert to fraction form
    378,622.34/522,691.64 = 292,387.71/x
  3. Step 3: Cross multiply
    378,622.34x = 522,691.64 × 292,387.71
  4. Step 4: Simplify right side
    378,622.34x = 152,828,610,193.81
  5. Step 5: Solve for x
    x = 152,828,610,193.81/378,622.34
  6. Step 6: Final answer
    x = 403,643.94

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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.