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Finding the Fourth Proportional to 653,058.20, 978,377.70 and 371,739.80

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Solution

The fourth proportional to 653,058.20, 978,377.70 and 371,739.80 is: 556,921.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,058.20 : 978,377.70 = 371,739.80 : x
  2. Step 2: Convert to fraction form
    653,058.20/978,377.70 = 371,739.80/x
  3. Step 3: Cross multiply
    653,058.20x = 978,377.70 × 371,739.80
  4. Step 4: Simplify right side
    653,058.20x = 363,701,930,522.46
  5. Step 5: Solve for x
    x = 363,701,930,522.46/653,058.20
  6. Step 6: Final answer
    x = 556,921.16

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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.