Home / 989,709.78-1,365,794.69-537,000.78

Finding the Fourth Proportional to 989,709.78, 1,365,794.69 and 537,000.78

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Solution

The fourth proportional to 989,709.78, 1,365,794.69 and 537,000.78 is: 741,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,709.78 : 1,365,794.69 = 537,000.78 : x
  2. Step 2: Convert to fraction form
    989,709.78/1,365,794.69 = 537,000.78/x
  3. Step 3: Cross multiply
    989,709.78x = 1,365,794.69 × 537,000.78
  4. Step 4: Simplify right side
    989,709.78x = 733,432,811,164.85
  5. Step 5: Solve for x
    x = 733,432,811,164.85/989,709.78
  6. Step 6: Final answer
    x = 741,058.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.