Home / 667,787,191.31-921,656,842.69-370,525,200.49

Finding the Fourth Proportional to 667,787,191.31, 921,656,842.69 and 370,525,200.49

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Solution

The fourth proportional to 667,787,191.31, 921,656,842.69 and 370,525,200.49 is: 511,386,098.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,787,191.31 : 921,656,842.69 = 370,525,200.49 : x
  2. Step 2: Convert to fraction form
    667,787,191.31/921,656,842.69 = 370,525,200.49/x
  3. Step 3: Cross multiply
    667,787,191.31x = 921,656,842.69 × 370,525,200.49
  4. Step 4: Simplify right side
    667,787,191.31x = 341,497,086,421,640,896
  5. Step 5: Solve for x
    x = 341,497,086,421,640,896/667,787,191.31
  6. Step 6: Final answer
    x = 511,386,098.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.