Home / 805,360,205.40-1,207,144,512.90-442,115,251.80

Finding the Fourth Proportional to 805,360,205.40, 1,207,144,512.90 and 442,115,251.80

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Solution

The fourth proportional to 805,360,205.40, 1,207,144,512.90 and 442,115,251.80 is: 662,681,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,360,205.40 : 1,207,144,512.90 = 442,115,251.80 : x
  2. Step 2: Convert to fraction form
    805,360,205.40/1,207,144,512.90 = 442,115,251.80/x
  3. Step 3: Cross multiply
    805,360,205.40x = 1,207,144,512.90 × 442,115,251.80
  4. Step 4: Simplify right side
    805,360,205.40x = 533,697,000,279,771,904
  5. Step 5: Solve for x
    x = 533,697,000,279,771,904/805,360,205.40
  6. Step 6: Final answer
    x = 662,681,116.72

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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.