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Finding the Fourth Proportional to 879,398.20, 1,314,950.10 and 655,449.40

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Solution

The fourth proportional to 879,398.20, 1,314,950.10 and 655,449.40 is: 980,083.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,398.20 : 1,314,950.10 = 655,449.40 : x
  2. Step 2: Convert to fraction form
    879,398.20/1,314,950.10 = 655,449.40/x
  3. Step 3: Cross multiply
    879,398.20x = 1,314,950.10 × 655,449.40
  4. Step 4: Simplify right side
    879,398.20x = 861,883,254,074.94
  5. Step 5: Solve for x
    x = 861,883,254,074.94/879,398.20
  6. Step 6: Final answer
    x = 980,083.03

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1.5x scale

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.