Home / 977,695.20-1,466,542.80-660,434.40

Finding the Fourth Proportional to 977,695.20, 1,466,542.80 and 660,434.40

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Solution

The fourth proportional to 977,695.20, 1,466,542.80 and 660,434.40 is: 990,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,695.20 : 1,466,542.80 = 660,434.40 : x
  2. Step 2: Convert to fraction form
    977,695.20/1,466,542.80 = 660,434.40/x
  3. Step 3: Cross multiply
    977,695.20x = 1,466,542.80 × 660,434.40
  4. Step 4: Simplify right side
    977,695.20x = 968,555,314,192.32
  5. Step 5: Solve for x
    x = 968,555,314,192.32/977,695.20
  6. Step 6: Final answer
    x = 990,651.60

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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.