Home / 649,777,680.40-974,181,780.60-390,932,251.60

Finding the Fourth Proportional to 649,777,680.40, 974,181,780.60 and 390,932,251.60

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Solution

The fourth proportional to 649,777,680.40, 974,181,780.60 and 390,932,251.60 is: 586,106,738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,777,680.40 : 974,181,780.60 = 390,932,251.60 : x
  2. Step 2: Convert to fraction form
    649,777,680.40/974,181,780.60 = 390,932,251.60/x
  3. Step 3: Cross multiply
    649,777,680.40x = 974,181,780.60 × 390,932,251.60
  4. Step 4: Simplify right side
    649,777,680.40x = 380,839,076,957,655,232
  5. Step 5: Solve for x
    x = 380,839,076,957,655,232/649,777,680.40
  6. Step 6: Final answer
    x = 586,106,738.42

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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.