Home / 898,138.80-1,347,208.20-579,274.20

Finding the Fourth Proportional to 898,138.80, 1,347,208.20 and 579,274.20

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Solution

The fourth proportional to 898,138.80, 1,347,208.20 and 579,274.20 is: 868,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,138.80 : 1,347,208.20 = 579,274.20 : x
  2. Step 2: Convert to fraction form
    898,138.80/1,347,208.20 = 579,274.20/x
  3. Step 3: Cross multiply
    898,138.80x = 1,347,208.20 × 579,274.20
  4. Step 4: Simplify right side
    898,138.80x = 780,402,952,288.44
  5. Step 5: Solve for x
    x = 780,402,952,288.44/898,138.80
  6. Step 6: Final answer
    x = 868,911.30

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Double scale
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Similar ratio
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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.