Home / 851,280.80-1,276,921.20-496,695.20

Finding the Fourth Proportional to 851,280.80, 1,276,921.20 and 496,695.20

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Solution

The fourth proportional to 851,280.80, 1,276,921.20 and 496,695.20 is: 745,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,280.80 : 1,276,921.20 = 496,695.20 : x
  2. Step 2: Convert to fraction form
    851,280.80/1,276,921.20 = 496,695.20/x
  3. Step 3: Cross multiply
    851,280.80x = 1,276,921.20 × 496,695.20
  4. Step 4: Simplify right side
    851,280.80x = 634,240,630,818.24
  5. Step 5: Solve for x
    x = 634,240,630,818.24/851,280.80
  6. Step 6: Final answer
    x = 745,042.80

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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.