Home / 1,126,680,987.83-1,688,828,691.94-378,984,966.35

Finding the Fourth Proportional to 1,126,680,987.83, 1,688,828,691.94 and 378,984,966.35

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Solution

The fourth proportional to 1,126,680,987.83, 1,688,828,691.94 and 378,984,966.35 is: 568,076,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,680,987.83 : 1,688,828,691.94 = 378,984,966.35 : x
  2. Step 2: Convert to fraction form
    1,126,680,987.83/1,688,828,691.94 = 378,984,966.35/x
  3. Step 3: Cross multiply
    1,126,680,987.83x = 1,688,828,691.94 × 378,984,966.35
  4. Step 4: Simplify right side
    1,126,680,987.83x = 640,040,684,976,403,840
  5. Step 5: Solve for x
    x = 640,040,684,976,403,840/1,126,680,987.83
  6. Step 6: Final answer
    x = 568,076,227.34

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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.