Home / 426,506,853.70-639,760,280.55-361,936,772.20

Finding the Fourth Proportional to 426,506,853.70, 639,760,280.55 and 361,936,772.20

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Solution

The fourth proportional to 426,506,853.70, 639,760,280.55 and 361,936,772.20 is: 542,905,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,506,853.70 : 639,760,280.55 = 361,936,772.20 : x
  2. Step 2: Convert to fraction form
    426,506,853.70/639,760,280.55 = 361,936,772.20/x
  3. Step 3: Cross multiply
    426,506,853.70x = 639,760,280.55 × 361,936,772.20
  4. Step 4: Simplify right side
    426,506,853.70x = 231,552,770,924,033,408
  5. Step 5: Solve for x
    x = 231,552,770,924,033,408/426,506,853.70
  6. Step 6: Final answer
    x = 542,905,158.30

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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.