Home / 977,478.70-1,466,218.05-660,217.90

Finding the Fourth Proportional to 977,478.70, 1,466,218.05 and 660,217.90

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Solution

The fourth proportional to 977,478.70, 1,466,218.05 and 660,217.90 is: 990,326.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,478.70 : 1,466,218.05 = 660,217.90 : x
  2. Step 2: Convert to fraction form
    977,478.70/1,466,218.05 = 660,217.90/x
  3. Step 3: Cross multiply
    977,478.70x = 1,466,218.05 × 660,217.90
  4. Step 4: Simplify right side
    977,478.70x = 968,023,401,913.10
  5. Step 5: Solve for x
    x = 968,023,401,913.10/977,478.70
  6. Step 6: Final answer
    x = 990,326.85

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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.