Home / 944,800-1,306,156.80-905,142.40

Finding the Fourth Proportional to 944,800, 1,306,156.80 and 905,142.40

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Solution

The fourth proportional to 944,800, 1,306,156.80 and 905,142.40 is: 1,251,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    944,800 : 1,306,156.80 = 905,142.40 : x
  2. Step 2: Convert to fraction form
    944,800/1,306,156.80 = 905,142.40/x
  3. Step 3: Cross multiply
    944,800x = 1,306,156.80 × 905,142.40
  4. Step 4: Simplify right side
    944,800x = 1,182,257,900,728.32
  5. Step 5: Solve for x
    x = 1,182,257,900,728.32/944,800
  6. Step 6: Final answer
    x = 1,251,331.39

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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.