Home / 426,506,856.20-639,760,284.30-361,936,774.70

Finding the Fourth Proportional to 426,506,856.20, 639,760,284.30 and 361,936,774.70

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Solution

The fourth proportional to 426,506,856.20, 639,760,284.30 and 361,936,774.70 is: 542,905,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,506,856.20 : 639,760,284.30 = 361,936,774.70 : x
  2. Step 2: Convert to fraction form
    426,506,856.20/639,760,284.30 = 361,936,774.70/x
  3. Step 3: Cross multiply
    426,506,856.20x = 639,760,284.30 × 361,936,774.70
  4. Step 4: Simplify right side
    426,506,856.20x = 231,552,773,880,697,024
  5. Step 5: Solve for x
    x = 231,552,773,880,697,024/426,506,856.20
  6. Step 6: Final answer
    x = 542,905,162.05

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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.