Home / 826,651.48-1,140,643.20-487,073.56

Finding the Fourth Proportional to 826,651.48, 1,140,643.20 and 487,073.56

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Solution

The fourth proportional to 826,651.48, 1,140,643.20 and 487,073.56 is: 672,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,651.48 : 1,140,643.20 = 487,073.56 : x
  2. Step 2: Convert to fraction form
    826,651.48/1,140,643.20 = 487,073.56/x
  3. Step 3: Cross multiply
    826,651.48x = 1,140,643.20 × 487,073.56
  4. Step 4: Simplify right side
    826,651.48x = 555,577,144,113.79
  5. Step 5: Solve for x
    x = 555,577,144,113.79/826,651.48
  6. Step 6: Final answer
    x = 672,081.47

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.