Home / 839,808,000.20-1,259,712,000.30-513,290,649.80

Finding the Fourth Proportional to 839,808,000.20, 1,259,712,000.30 and 513,290,649.80

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Solution

The fourth proportional to 839,808,000.20, 1,259,712,000.30 and 513,290,649.80 is: 769,935,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,000.20 : 1,259,712,000.30 = 513,290,649.80 : x
  2. Step 2: Convert to fraction form
    839,808,000.20/1,259,712,000.30 = 513,290,649.80/x
  3. Step 3: Cross multiply
    839,808,000.20x = 1,259,712,000.30 × 513,290,649.80
  4. Step 4: Simplify right side
    839,808,000.20x = 646,598,391,194,844,800
  5. Step 5: Solve for x
    x = 646,598,391,194,844,800/839,808,000.20
  6. Step 6: Final answer
    x = 769,935,974.70

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1.5x scale

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.