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Finding the Fourth Proportional to 644,047.80, 966,071.70 and 478,159.80

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Solution

The fourth proportional to 644,047.80, 966,071.70 and 478,159.80 is: 717,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,047.80 : 966,071.70 = 478,159.80 : x
  2. Step 2: Convert to fraction form
    644,047.80/966,071.70 = 478,159.80/x
  3. Step 3: Cross multiply
    644,047.80x = 966,071.70 × 478,159.80
  4. Step 4: Simplify right side
    644,047.80x = 461,936,650,857.66
  5. Step 5: Solve for x
    x = 461,936,650,857.66/644,047.80
  6. Step 6: Final answer
    x = 717,239.70

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.