Home / 725,615,999.80-1,088,423,999.70-403,129,727.80

Finding the Fourth Proportional to 725,615,999.80, 1,088,423,999.70 and 403,129,727.80

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Solution

The fourth proportional to 725,615,999.80, 1,088,423,999.70 and 403,129,727.80 is: 604,694,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,615,999.80 : 1,088,423,999.70 = 403,129,727.80 : x
  2. Step 2: Convert to fraction form
    725,615,999.80/1,088,423,999.70 = 403,129,727.80/x
  3. Step 3: Cross multiply
    725,615,999.80x = 1,088,423,999.70 × 403,129,727.80
  4. Step 4: Simplify right side
    725,615,999.80x = 438,776,070,730,048,320
  5. Step 5: Solve for x
    x = 438,776,070,730,048,320/725,615,999.80
  6. Step 6: Final answer
    x = 604,694,591.70

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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.