Home / 989,717.40-1,484,430.30-279,817.20

Finding the Fourth Proportional to 989,717.40, 1,484,430.30 and 279,817.20

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Solution

The fourth proportional to 989,717.40, 1,484,430.30 and 279,817.20 is: 419,684.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,717.40 : 1,484,430.30 = 279,817.20 : x
  2. Step 2: Convert to fraction form
    989,717.40/1,484,430.30 = 279,817.20/x
  3. Step 3: Cross multiply
    989,717.40x = 1,484,430.30 × 279,817.20
  4. Step 4: Simplify right side
    989,717.40x = 415,369,130,141.16
  5. Step 5: Solve for x
    x = 415,369,130,141.16/989,717.40
  6. Step 6: Final answer
    x = 419,684.58

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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.