Home / 989,838.90-1,484,612.55-279,938.70

Finding the Fourth Proportional to 989,838.90, 1,484,612.55 and 279,938.70

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Solution

The fourth proportional to 989,838.90, 1,484,612.55 and 279,938.70 is: 419,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,838.90 : 1,484,612.55 = 279,938.70 : x
  2. Step 2: Convert to fraction form
    989,838.90/1,484,612.55 = 279,938.70/x
  3. Step 3: Cross multiply
    989,838.90x = 1,484,612.55 × 279,938.70
  4. Step 4: Simplify right side
    989,838.90x = 415,600,507,250.69
  5. Step 5: Solve for x
    x = 415,600,507,250.69/989,838.90
  6. Step 6: Final answer
    x = 419,866.82

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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.