Home / 820,144.16-1,131,773.28-480,838.40

Finding the Fourth Proportional to 820,144.16, 1,131,773.28 and 480,838.40

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Solution

The fourth proportional to 820,144.16, 1,131,773.28 and 480,838.40 is: 663,541.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,144.16 : 1,131,773.28 = 480,838.40 : x
  2. Step 2: Convert to fraction form
    820,144.16/1,131,773.28 = 480,838.40/x
  3. Step 3: Cross multiply
    820,144.16x = 1,131,773.28 × 480,838.40
  4. Step 4: Simplify right side
    820,144.16x = 544,200,053,117.95
  5. Step 5: Solve for x
    x = 544,200,053,117.95/820,144.16
  6. Step 6: Final answer
    x = 663,541.95

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1.5x scale

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.