Home / 738,144,614.40-1,107,216,921.60-431,278,771.20

Finding the Fourth Proportional to 738,144,614.40, 1,107,216,921.60 and 431,278,771.20

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Solution

The fourth proportional to 738,144,614.40, 1,107,216,921.60 and 431,278,771.20 is: 646,918,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,144,614.40 : 1,107,216,921.60 = 431,278,771.20 : x
  2. Step 2: Convert to fraction form
    738,144,614.40/1,107,216,921.60 = 431,278,771.20/x
  3. Step 3: Cross multiply
    738,144,614.40x = 1,107,216,921.60 × 431,278,771.20
  4. Step 4: Simplify right side
    738,144,614.40x = 477,519,153,399,494,656
  5. Step 5: Solve for x
    x = 477,519,153,399,494,656/738,144,614.40
  6. Step 6: Final answer
    x = 646,918,156.80

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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.