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Finding the Fourth Proportional to 608,524.71, 839,000.66 and 390,348.71

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Solution

The fourth proportional to 608,524.71, 839,000.66 and 390,348.71 is: 538,191.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,524.71 : 839,000.66 = 390,348.71 : x
  2. Step 2: Convert to fraction form
    608,524.71/839,000.66 = 390,348.71/x
  3. Step 3: Cross multiply
    608,524.71x = 839,000.66 × 390,348.71
  4. Step 4: Simplify right side
    608,524.71x = 327,502,825,320.15
  5. Step 5: Solve for x
    x = 327,502,825,320.15/608,524.71
  6. Step 6: Final answer
    x = 538,191.50

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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.