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Finding the Fourth Proportional to 418,972.45, 578,081.18 and 246,897.47

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Solution

The fourth proportional to 418,972.45, 578,081.18 and 246,897.47 is: 340,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,972.45 : 578,081.18 = 246,897.47 : x
  2. Step 2: Convert to fraction form
    418,972.45/578,081.18 = 246,897.47/x
  3. Step 3: Cross multiply
    418,972.45x = 578,081.18 × 246,897.47
  4. Step 4: Simplify right side
    418,972.45x = 142,726,778,912.96
  5. Step 5: Solve for x
    x = 142,726,778,912.96/418,972.45
  6. Step 6: Final answer
    x = 340,659.10

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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.