Home / 647,209,686.30-970,814,529.45-429,531,452.70

Finding the Fourth Proportional to 647,209,686.30, 970,814,529.45 and 429,531,452.70

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Solution

The fourth proportional to 647,209,686.30, 970,814,529.45 and 429,531,452.70 is: 644,297,179.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,209,686.30 : 970,814,529.45 = 429,531,452.70 : x
  2. Step 2: Convert to fraction form
    647,209,686.30/970,814,529.45 = 429,531,452.70/x
  3. Step 3: Cross multiply
    647,209,686.30x = 970,814,529.45 × 429,531,452.70
  4. Step 4: Simplify right side
    647,209,686.30x = 416,995,375,136,925,440
  5. Step 5: Solve for x
    x = 416,995,375,136,925,440/647,209,686.30
  6. Step 6: Final answer
    x = 644,297,179.05

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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.