Home / 989,811.20-1,484,765.40-517,419.20

Finding the Fourth Proportional to 989,811.20, 1,484,765.40 and 517,419.20

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Solution

The fourth proportional to 989,811.20, 1,484,765.40 and 517,419.20 is: 776,154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,811.20 : 1,484,765.40 = 517,419.20 : x
  2. Step 2: Convert to fraction form
    989,811.20/1,484,765.40 = 517,419.20/x
  3. Step 3: Cross multiply
    989,811.20x = 1,484,765.40 × 517,419.20
  4. Step 4: Simplify right side
    989,811.20x = 768,246,125,455.68
  5. Step 5: Solve for x
    x = 768,246,125,455.68/989,811.20
  6. Step 6: Final answer
    x = 776,154.21

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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.