Home / 628,123,238.32-941,748,546.78-278,178,612.70

Finding the Fourth Proportional to 628,123,238.32, 941,748,546.78 and 278,178,612.70

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Solution

The fourth proportional to 628,123,238.32, 941,748,546.78 and 278,178,612.70 is: 417,074,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,123,238.32 : 941,748,546.78 = 278,178,612.70 : x
  2. Step 2: Convert to fraction form
    628,123,238.32/941,748,546.78 = 278,178,612.70/x
  3. Step 3: Cross multiply
    628,123,238.32x = 941,748,546.78 × 278,178,612.70
  4. Step 4: Simplify right side
    628,123,238.32x = 261,974,304,255,501,440
  5. Step 5: Solve for x
    x = 261,974,304,255,501,440/628,123,238.32
  6. Step 6: Final answer
    x = 417,074,688.97

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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.