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Finding the Fourth Proportional to 656,640.60, 984,960.90 and 570,035.40

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Solution

The fourth proportional to 656,640.60, 984,960.90 and 570,035.40 is: 855,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,640.60 : 984,960.90 = 570,035.40 : x
  2. Step 2: Convert to fraction form
    656,640.60/984,960.90 = 570,035.40/x
  3. Step 3: Cross multiply
    656,640.60x = 984,960.90 × 570,035.40
  4. Step 4: Simplify right side
    656,640.60x = 561,462,580,615.86
  5. Step 5: Solve for x
    x = 561,462,580,615.86/656,640.60
  6. Step 6: Final answer
    x = 855,053.10

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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.