Home / 989,021.76-1,484,141.76-389,880.96

Finding the Fourth Proportional to 989,021.76, 1,484,141.76 and 389,880.96

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Solution

The fourth proportional to 989,021.76, 1,484,141.76 and 389,880.96 is: 585,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,021.76 : 1,484,141.76 = 389,880.96 : x
  2. Step 2: Convert to fraction form
    989,021.76/1,484,141.76 = 389,880.96/x
  3. Step 3: Cross multiply
    989,021.76x = 1,484,141.76 × 389,880.96
  4. Step 4: Simplify right side
    989,021.76x = 578,638,614,164.89
  5. Step 5: Solve for x
    x = 578,638,614,164.89/989,021.76
  6. Step 6: Final answer
    x = 585,061.56

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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.