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Finding the Fourth Proportional to 688,702.88, 950,404.92 and 386,896.88

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Solution

The fourth proportional to 688,702.88, 950,404.92 and 386,896.88 is: 533,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,702.88 : 950,404.92 = 386,896.88 : x
  2. Step 2: Convert to fraction form
    688,702.88/950,404.92 = 386,896.88/x
  3. Step 3: Cross multiply
    688,702.88x = 950,404.92 × 386,896.88
  4. Step 4: Simplify right side
    688,702.88x = 367,708,698,284.65
  5. Step 5: Solve for x
    x = 367,708,698,284.65/688,702.88
  6. Step 6: Final answer
    x = 533,914.85

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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.