Home / 1,013,570.20-1,520,355.30-978,140.80

Finding the Fourth Proportional to 1,013,570.20, 1,520,355.30 and 978,140.80

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Solution

The fourth proportional to 1,013,570.20, 1,520,355.30 and 978,140.80 is: 1,467,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,570.20 : 1,520,355.30 = 978,140.80 : x
  2. Step 2: Convert to fraction form
    1,013,570.20/1,520,355.30 = 978,140.80/x
  3. Step 3: Cross multiply
    1,013,570.20x = 1,520,355.30 × 978,140.80
  4. Step 4: Simplify right side
    1,013,570.20x = 1,487,121,549,426.24
  5. Step 5: Solve for x
    x = 1,487,121,549,426.24/1,013,570.20
  6. Step 6: Final answer
    x = 1,467,211.20

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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.