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Finding the Fourth Proportional to 709,473.94, 979,094.79 and 387,204.71

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Solution

The fourth proportional to 709,473.94, 979,094.79 and 387,204.71 is: 534,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,473.94 : 979,094.79 = 387,204.71 : x
  2. Step 2: Convert to fraction form
    709,473.94/979,094.79 = 387,204.71/x
  3. Step 3: Cross multiply
    709,473.94x = 979,094.79 × 387,204.71
  4. Step 4: Simplify right side
    709,473.94x = 379,110,109,328.99
  5. Step 5: Solve for x
    x = 379,110,109,328.99/709,473.94
  6. Step 6: Final answer
    x = 534,353.82

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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.