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Finding the Fourth Proportional to 698,508.80, 963,943.36 and 396,702.72

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Solution

The fourth proportional to 698,508.80, 963,943.36 and 396,702.72 is: 547,450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,508.80 : 963,943.36 = 396,702.72 : x
  2. Step 2: Convert to fraction form
    698,508.80/963,943.36 = 396,702.72/x
  3. Step 3: Cross multiply
    698,508.80x = 963,943.36 × 396,702.72
  4. Step 4: Simplify right side
    698,508.80x = 382,398,952,837.94
  5. Step 5: Solve for x
    x = 382,398,952,837.94/698,508.80
  6. Step 6: Final answer
    x = 547,450.44

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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.