Home / 261,885,757-392,895,360.90-77,659,962.88

Finding the Fourth Proportional to 261,885,757, 392,895,360.90 and 77,659,962.88

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Solution

The fourth proportional to 261,885,757, 392,895,360.90 and 77,659,962.88 is: 116,509,731.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,885,757 : 392,895,360.90 = 77,659,962.88 : x
  2. Step 2: Convert to fraction form
    261,885,757/392,895,360.90 = 77,659,962.88/x
  3. Step 3: Cross multiply
    261,885,757x = 392,895,360.90 × 77,659,962.88
  4. Step 4: Simplify right side
    261,885,757x = 30,512,239,143,218,200
  5. Step 5: Solve for x
    x = 30,512,239,143,218,200/261,885,757
  6. Step 6: Final answer
    x = 116,509,731.16

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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.