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Finding the Fourth Proportional to 631,079.43, 870,889.50 and 344,599.76

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Solution

The fourth proportional to 631,079.43, 870,889.50 and 344,599.76 is: 475,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,079.43 : 870,889.50 = 344,599.76 : x
  2. Step 2: Convert to fraction form
    631,079.43/870,889.50 = 344,599.76/x
  3. Step 3: Cross multiply
    631,079.43x = 870,889.50 × 344,599.76
  4. Step 4: Simplify right side
    631,079.43x = 300,108,308,332.07
  5. Step 5: Solve for x
    x = 300,108,308,332.07/631,079.43
  6. Step 6: Final answer
    x = 475,547.60

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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.