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Finding the Fourth Proportional to 663,488.38, 995,610.55 and 258,627.90

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Solution

The fourth proportional to 663,488.38, 995,610.55 and 258,627.90 is: 388,089.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,488.38 : 995,610.55 = 258,627.90 : x
  2. Step 2: Convert to fraction form
    663,488.38/995,610.55 = 258,627.90/x
  3. Step 3: Cross multiply
    663,488.38x = 995,610.55 × 258,627.90
  4. Step 4: Simplify right side
    663,488.38x = 257,492,663,921.89
  5. Step 5: Solve for x
    x = 257,492,663,921.89/663,488.38
  6. Step 6: Final answer
    x = 388,089.19

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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.