Home / 980,325.12-1,352,689.58-612,758.76

Finding the Fourth Proportional to 980,325.12, 1,352,689.58 and 612,758.76

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Solution

The fourth proportional to 980,325.12, 1,352,689.58 and 612,758.76 is: 845,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,325.12 : 1,352,689.58 = 612,758.76 : x
  2. Step 2: Convert to fraction form
    980,325.12/1,352,689.58 = 612,758.76/x
  3. Step 3: Cross multiply
    980,325.12x = 1,352,689.58 × 612,758.76
  4. Step 4: Simplify right side
    980,325.12x = 828,872,389,705.72
  5. Step 5: Solve for x
    x = 828,872,389,705.72/980,325.12
  6. Step 6: Final answer
    x = 845,507.65

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Double scale
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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.