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Finding the Fourth Proportional to 680,693.60, 1,021,040.40 and 468,117.20

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Solution

The fourth proportional to 680,693.60, 1,021,040.40 and 468,117.20 is: 702,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,693.60 : 1,021,040.40 = 468,117.20 : x
  2. Step 2: Convert to fraction form
    680,693.60/1,021,040.40 = 468,117.20/x
  3. Step 3: Cross multiply
    680,693.60x = 1,021,040.40 × 468,117.20
  4. Step 4: Simplify right side
    680,693.60x = 477,966,573,134.88
  5. Step 5: Solve for x
    x = 477,966,573,134.88/680,693.60
  6. Step 6: Final answer
    x = 702,175.80

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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.