Home / 986,457.80-1,478,082.90-891,979.40

Finding the Fourth Proportional to 986,457.80, 1,478,082.90 and 891,979.40

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Solution

The fourth proportional to 986,457.80, 1,478,082.90 and 891,979.40 is: 1,336,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,457.80 : 1,478,082.90 = 891,979.40 : x
  2. Step 2: Convert to fraction form
    986,457.80/1,478,082.90 = 891,979.40/x
  3. Step 3: Cross multiply
    986,457.80x = 1,478,082.90 × 891,979.40
  4. Step 4: Simplify right side
    986,457.80x = 1,318,419,498,292.26
  5. Step 5: Solve for x
    x = 1,318,419,498,292.26/986,457.80
  6. Step 6: Final answer
    x = 1,336,518.90

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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.