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Finding the Fourth Proportional to 646,280.52, 891,896.22 and 359,818.56

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Solution

The fourth proportional to 646,280.52, 891,896.22 and 359,818.56 is: 496,565.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,280.52 : 891,896.22 = 359,818.56 : x
  2. Step 2: Convert to fraction form
    646,280.52/891,896.22 = 359,818.56/x
  3. Step 3: Cross multiply
    646,280.52x = 891,896.22 × 359,818.56
  4. Step 4: Simplify right side
    646,280.52x = 320,920,813,549.84
  5. Step 5: Solve for x
    x = 320,920,813,549.84/646,280.52
  6. Step 6: Final answer
    x = 496,565.82

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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.