Home / 977,680.20-1,466,520.30-660,419.40

Finding the Fourth Proportional to 977,680.20, 1,466,520.30 and 660,419.40

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Solution

The fourth proportional to 977,680.20, 1,466,520.30 and 660,419.40 is: 990,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,680.20 : 1,466,520.30 = 660,419.40 : x
  2. Step 2: Convert to fraction form
    977,680.20/1,466,520.30 = 660,419.40/x
  3. Step 3: Cross multiply
    977,680.20x = 1,466,520.30 × 660,419.40
  4. Step 4: Simplify right side
    977,680.20x = 968,518,456,613.82
  5. Step 5: Solve for x
    x = 968,518,456,613.82/977,680.20
  6. Step 6: Final answer
    x = 990,629.10

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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.