Home / 989,993.20-1,484,989.80-712,130.80

Finding the Fourth Proportional to 989,993.20, 1,484,989.80 and 712,130.80

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Solution

The fourth proportional to 989,993.20, 1,484,989.80 and 712,130.80 is: 1,068,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,993.20 : 1,484,989.80 = 712,130.80 : x
  2. Step 2: Convert to fraction form
    989,993.20/1,484,989.80 = 712,130.80/x
  3. Step 3: Cross multiply
    989,993.20x = 1,484,989.80 × 712,130.80
  4. Step 4: Simplify right side
    989,993.20x = 1,057,506,974,265.84
  5. Step 5: Solve for x
    x = 1,057,506,974,265.84/989,993.20
  6. Step 6: Final answer
    x = 1,068,196.20

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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.