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Finding the Fourth Proportional to 663,143.84, 995,009.72 and 347,525.68

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Solution

The fourth proportional to 663,143.84, 995,009.72 and 347,525.68 is: 521,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,143.84 : 995,009.72 = 347,525.68 : x
  2. Step 2: Convert to fraction form
    663,143.84/995,009.72 = 347,525.68/x
  3. Step 3: Cross multiply
    663,143.84x = 995,009.72 × 347,525.68
  4. Step 4: Simplify right side
    663,143.84x = 345,791,429,549.61
  5. Step 5: Solve for x
    x = 345,791,429,549.61/663,143.84
  6. Step 6: Final answer
    x = 521,442.57

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Similar ratio
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1.5x scale

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.