Home / 859,276.90-1,288,587.30-260,038.90

Finding the Fourth Proportional to 859,276.90, 1,288,587.30 and 260,038.90

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Solution

The fourth proportional to 859,276.90, 1,288,587.30 and 260,038.90 is: 389,959.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,276.90 : 1,288,587.30 = 260,038.90 : x
  2. Step 2: Convert to fraction form
    859,276.90/1,288,587.30 = 260,038.90/x
  3. Step 3: Cross multiply
    859,276.90x = 1,288,587.30 × 260,038.90
  4. Step 4: Simplify right side
    859,276.90x = 335,082,824,045.97
  5. Step 5: Solve for x
    x = 335,082,824,045.97/859,276.90
  6. Step 6: Final answer
    x = 389,959.07

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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.