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Finding the Fourth Proportional to 638,009.20, 956,470.20 and 282,829.60

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Solution

The fourth proportional to 638,009.20, 956,470.20 and 282,829.60 is: 424,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,009.20 : 956,470.20 = 282,829.60 : x
  2. Step 2: Convert to fraction form
    638,009.20/956,470.20 = 282,829.60/x
  3. Step 3: Cross multiply
    638,009.20x = 956,470.20 × 282,829.60
  4. Step 4: Simplify right side
    638,009.20x = 270,518,084,077.92
  5. Step 5: Solve for x
    x = 270,518,084,077.92/638,009.20
  6. Step 6: Final answer
    x = 424,003.42

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1.5x scale

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.