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Finding the Fourth Proportional to 867,614.76, 1,197,296.64 and 485,641.44

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Solution

The fourth proportional to 867,614.76, 1,197,296.64 and 485,641.44 is: 670,178.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,614.76 : 1,197,296.64 = 485,641.44 : x
  2. Step 2: Convert to fraction form
    867,614.76/1,197,296.64 = 485,641.44/x
  3. Step 3: Cross multiply
    867,614.76x = 1,197,296.64 × 485,641.44
  4. Step 4: Simplify right side
    867,614.76x = 581,456,864,356.76
  5. Step 5: Solve for x
    x = 581,456,864,356.76/867,614.76
  6. Step 6: Final answer
    x = 670,178.62

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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.