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Finding the Fourth Proportional to 782,107.89, 1,079,308.89 and 424,411.89

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Solution

The fourth proportional to 782,107.89, 1,079,308.89 and 424,411.89 is: 585,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,107.89 : 1,079,308.89 = 424,411.89 : x
  2. Step 2: Convert to fraction form
    782,107.89/1,079,308.89 = 424,411.89/x
  3. Step 3: Cross multiply
    782,107.89x = 1,079,308.89 × 424,411.89
  4. Step 4: Simplify right side
    782,107.89x = 458,071,525,898.70
  5. Step 5: Solve for x
    x = 458,071,525,898.70/782,107.89
  6. Step 6: Final answer
    x = 585,688.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.