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Finding the Fourth Proportional to 652,285.80, 978,428.70 and 453,220.20

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Solution

The fourth proportional to 652,285.80, 978,428.70 and 453,220.20 is: 679,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,285.80 : 978,428.70 = 453,220.20 : x
  2. Step 2: Convert to fraction form
    652,285.80/978,428.70 = 453,220.20/x
  3. Step 3: Cross multiply
    652,285.80x = 978,428.70 × 453,220.20
  4. Step 4: Simplify right side
    652,285.80x = 443,443,651,099.74
  5. Step 5: Solve for x
    x = 443,443,651,099.74/652,285.80
  6. Step 6: Final answer
    x = 679,830.30

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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.