Home / 989,521.20-1,484,330.40-517,129.20

Finding the Fourth Proportional to 989,521.20, 1,484,330.40 and 517,129.20

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Solution

The fourth proportional to 989,521.20, 1,484,330.40 and 517,129.20 is: 775,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,521.20 : 1,484,330.40 = 517,129.20 : x
  2. Step 2: Convert to fraction form
    989,521.20/1,484,330.40 = 517,129.20/x
  3. Step 3: Cross multiply
    989,521.20x = 1,484,330.40 × 517,129.20
  4. Step 4: Simplify right side
    989,521.20x = 767,590,592,287.68
  5. Step 5: Solve for x
    x = 767,590,592,287.68/989,521.20
  6. Step 6: Final answer
    x = 775,719.20

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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.