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Finding the Fourth Proportional to 641,035.40, 960,386.70 and 522,062.60

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Solution

The fourth proportional to 641,035.40, 960,386.70 and 522,062.60 is: 782,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,035.40 : 960,386.70 = 522,062.60 : x
  2. Step 2: Convert to fraction form
    641,035.40/960,386.70 = 522,062.60/x
  3. Step 3: Cross multiply
    641,035.40x = 960,386.70 × 522,062.60
  4. Step 4: Simplify right side
    641,035.40x = 501,381,977,607.42
  5. Step 5: Solve for x
    x = 501,381,977,607.42/641,035.40
  6. Step 6: Final answer
    x = 782,143.98

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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.