Home / 989,038.80-1,482,391.80-515,480.40

Finding the Fourth Proportional to 989,038.80, 1,482,391.80 and 515,480.40

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Solution

The fourth proportional to 989,038.80, 1,482,391.80 and 515,480.40 is: 772,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,038.80 : 1,482,391.80 = 515,480.40 : x
  2. Step 2: Convert to fraction form
    989,038.80/1,482,391.80 = 515,480.40/x
  3. Step 3: Cross multiply
    989,038.80x = 1,482,391.80 × 515,480.40
  4. Step 4: Simplify right side
    989,038.80x = 764,143,918,020.72
  5. Step 5: Solve for x
    x = 764,143,918,020.72/989,038.80
  6. Step 6: Final answer
    x = 772,612.68

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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.