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Finding the Fourth Proportional to 648,034.60, 972,051.90 and 487,071.40

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Solution

The fourth proportional to 648,034.60, 972,051.90 and 487,071.40 is: 730,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,034.60 : 972,051.90 = 487,071.40 : x
  2. Step 2: Convert to fraction form
    648,034.60/972,051.90 = 487,071.40/x
  3. Step 3: Cross multiply
    648,034.60x = 972,051.90 × 487,071.40
  4. Step 4: Simplify right side
    648,034.60x = 473,458,679,805.66
  5. Step 5: Solve for x
    x = 473,458,679,805.66/648,034.60
  6. Step 6: Final answer
    x = 730,607.10

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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.