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Finding the Fourth Proportional to 1,156,905.60, 1,739,505.60 and 974,428.80

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Solution

The fourth proportional to 1,156,905.60, 1,739,505.60 and 974,428.80 is: 1,465,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156,905.60 : 1,739,505.60 = 974,428.80 : x
  2. Step 2: Convert to fraction form
    1,156,905.60/1,739,505.60 = 974,428.80/x
  3. Step 3: Cross multiply
    1,156,905.60x = 1,739,505.60 × 974,428.80
  4. Step 4: Simplify right side
    1,156,905.60x = 1,695,024,354,401.28
  5. Step 5: Solve for x
    x = 1,695,024,354,401.28/1,156,905.60
  6. Step 6: Final answer
    x = 1,465,136.27

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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.