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Finding the Fourth Proportional to 713,479.20, 1,070,218.80 and 648,160.80

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Solution

The fourth proportional to 713,479.20, 1,070,218.80 and 648,160.80 is: 972,241.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,479.20 : 1,070,218.80 = 648,160.80 : x
  2. Step 2: Convert to fraction form
    713,479.20/1,070,218.80 = 648,160.80/x
  3. Step 3: Cross multiply
    713,479.20x = 1,070,218.80 × 648,160.80
  4. Step 4: Simplify right side
    713,479.20x = 693,673,873,583.04
  5. Step 5: Solve for x
    x = 693,673,873,583.04/713,479.20
  6. Step 6: Final answer
    x = 972,241.20

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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.