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Finding the Fourth Proportional to 709,995.96, 979,802.46 and 387,709.92

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Solution

The fourth proportional to 709,995.96, 979,802.46 and 387,709.92 is: 535,044.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,995.96 : 979,802.46 = 387,709.92 : x
  2. Step 2: Convert to fraction form
    709,995.96/979,802.46 = 387,709.92/x
  3. Step 3: Cross multiply
    709,995.96x = 979,802.46 × 387,709.92
  4. Step 4: Simplify right side
    709,995.96x = 379,879,133,382.40
  5. Step 5: Solve for x
    x = 379,879,133,382.40/709,995.96
  6. Step 6: Final answer
    x = 535,044.08

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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.