Home / 859,280.40-1,288,592.55-260,042.40

Finding the Fourth Proportional to 859,280.40, 1,288,592.55 and 260,042.40

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Solution

The fourth proportional to 859,280.40, 1,288,592.55 and 260,042.40 is: 389,964.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,280.40 : 1,288,592.55 = 260,042.40 : x
  2. Step 2: Convert to fraction form
    859,280.40/1,288,592.55 = 260,042.40/x
  3. Step 3: Cross multiply
    859,280.40x = 1,288,592.55 × 260,042.40
  4. Step 4: Simplify right side
    859,280.40x = 335,088,699,324.12
  5. Step 5: Solve for x
    x = 335,088,699,324.12/859,280.40
  6. Step 6: Final answer
    x = 389,964.32

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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.