Home / 989,244.80-1,482,700.80-515,686.40

Finding the Fourth Proportional to 989,244.80, 1,482,700.80 and 515,686.40

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Solution

The fourth proportional to 989,244.80, 1,482,700.80 and 515,686.40 is: 772,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,244.80 : 1,482,700.80 = 515,686.40 : x
  2. Step 2: Convert to fraction form
    989,244.80/1,482,700.80 = 515,686.40/x
  3. Step 3: Cross multiply
    989,244.80x = 1,482,700.80 × 515,686.40
  4. Step 4: Simplify right side
    989,244.80x = 764,608,637,829.12
  5. Step 5: Solve for x
    x = 764,608,637,829.12/989,244.80
  6. Step 6: Final answer
    x = 772,921.56

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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.