Home / 431,137,847.40-646,706,771.10-124,439,965.80

Finding the Fourth Proportional to 431,137,847.40, 646,706,771.10 and 124,439,965.80

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Solution

The fourth proportional to 431,137,847.40, 646,706,771.10 and 124,439,965.80 is: 186,659,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,137,847.40 : 646,706,771.10 = 124,439,965.80 : x
  2. Step 2: Convert to fraction form
    431,137,847.40/646,706,771.10 = 124,439,965.80/x
  3. Step 3: Cross multiply
    431,137,847.40x = 646,706,771.10 × 124,439,965.80
  4. Step 4: Simplify right side
    431,137,847.40x = 80,476,168,478,312,432
  5. Step 5: Solve for x
    x = 80,476,168,478,312,432/431,137,847.40
  6. Step 6: Final answer
    x = 186,659,948.70

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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.