Home / 2,087,785.35-3,130,909.86-721,211.40

Finding the Fourth Proportional to 2,087,785.35, 3,130,909.86 and 721,211.40

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Solution

The fourth proportional to 2,087,785.35, 3,130,909.86 and 721,211.40 is: 1,081,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087,785.35 : 3,130,909.86 = 721,211.40 : x
  2. Step 2: Convert to fraction form
    2,087,785.35/3,130,909.86 = 721,211.40/x
  3. Step 3: Cross multiply
    2,087,785.35x = 3,130,909.86 × 721,211.40
  4. Step 4: Simplify right side
    2,087,785.35x = 2,258,047,883,404.40
  5. Step 5: Solve for x
    x = 2,258,047,883,404.40/2,087,785.35
  6. Step 6: Final answer
    x = 1,081,551.74

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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.