Home / 920,863.68-1,270,987.92-618,882.72

Finding the Fourth Proportional to 920,863.68, 1,270,987.92 and 618,882.72

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Solution

The fourth proportional to 920,863.68, 1,270,987.92 and 618,882.72 is: 854,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,863.68 : 1,270,987.92 = 618,882.72 : x
  2. Step 2: Convert to fraction form
    920,863.68/1,270,987.92 = 618,882.72/x
  3. Step 3: Cross multiply
    920,863.68x = 1,270,987.92 × 618,882.72
  4. Step 4: Simplify right side
    920,863.68x = 786,592,461,016.74
  5. Step 5: Solve for x
    x = 786,592,461,016.74/920,863.68
  6. Step 6: Final answer
    x = 854,189.91

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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.