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Finding the Fourth Proportional to 663,901.47, 995,341.77 and 343,710.09

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Solution

The fourth proportional to 663,901.47, 995,341.77 and 343,710.09 is: 515,300.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,901.47 : 995,341.77 = 343,710.09 : x
  2. Step 2: Convert to fraction form
    663,901.47/995,341.77 = 343,710.09/x
  3. Step 3: Cross multiply
    663,901.47x = 995,341.77 × 343,710.09
  4. Step 4: Simplify right side
    663,901.47x = 342,109,009,347.46
  5. Step 5: Solve for x
    x = 342,109,009,347.46/663,901.47
  6. Step 6: Final answer
    x = 515,300.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.