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Finding the Fourth Proportional to 663,000.40, 995,278.20 and 658,334.80

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Solution

The fourth proportional to 663,000.40, 995,278.20 and 658,334.80 is: 988,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,000.40 : 995,278.20 = 658,334.80 : x
  2. Step 2: Convert to fraction form
    663,000.40/995,278.20 = 658,334.80/x
  3. Step 3: Cross multiply
    663,000.40x = 995,278.20 × 658,334.80
  4. Step 4: Simplify right side
    663,000.40x = 655,226,274,741.36
  5. Step 5: Solve for x
    x = 655,226,274,741.36/663,000.40
  6. Step 6: Final answer
    x = 988,274.33

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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.