Home / 391,219,928.40-586,829,892.60-187,146,584.40

Finding the Fourth Proportional to 391,219,928.40, 586,829,892.60 and 187,146,584.40

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Solution

The fourth proportional to 391,219,928.40, 586,829,892.60 and 187,146,584.40 is: 280,719,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,219,928.40 : 586,829,892.60 = 187,146,584.40 : x
  2. Step 2: Convert to fraction form
    391,219,928.40/586,829,892.60 = 187,146,584.40/x
  3. Step 3: Cross multiply
    391,219,928.40x = 586,829,892.60 × 187,146,584.40
  4. Step 4: Simplify right side
    391,219,928.40x = 109,823,210,023,908,848
  5. Step 5: Solve for x
    x = 109,823,210,023,908,848/391,219,928.40
  6. Step 6: Final answer
    x = 280,719,876.60

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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.