Home / 981,361,725.60-1,470,792,207.60-521,520,189.60

Finding the Fourth Proportional to 981,361,725.60, 1,470,792,207.60 and 521,520,189.60

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Solution

The fourth proportional to 981,361,725.60, 1,470,792,207.60 and 521,520,189.60 is: 781,615,800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,361,725.60 : 1,470,792,207.60 = 521,520,189.60 : x
  2. Step 2: Convert to fraction form
    981,361,725.60/1,470,792,207.60 = 521,520,189.60/x
  3. Step 3: Cross multiply
    981,361,725.60x = 1,470,792,207.60 × 521,520,189.60
  4. Step 4: Simplify right side
    981,361,725.60x = 767,047,830,969,754,496
  5. Step 5: Solve for x
    x = 767,047,830,969,754,496/981,361,725.60
  6. Step 6: Final answer
    x = 781,615,800.74

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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.