Home / 729,000.45-1,006,001.10-406,702.26

Finding the Fourth Proportional to 729,000.45, 1,006,001.10 and 406,702.26

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Solution

The fourth proportional to 729,000.45, 1,006,001.10 and 406,702.26 is: 561,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,000.45 : 1,006,001.10 = 406,702.26 : x
  2. Step 2: Convert to fraction form
    729,000.45/1,006,001.10 = 406,702.26/x
  3. Step 3: Cross multiply
    729,000.45x = 1,006,001.10 × 406,702.26
  4. Step 4: Simplify right side
    729,000.45x = 409,142,920,932.49
  5. Step 5: Solve for x
    x = 409,142,920,932.49/729,000.45
  6. Step 6: Final answer
    x = 561,238.23

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Double scale
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Similar ratio
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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.