Home / 989,721.35-1,485,328.23-724,166.90

Finding the Fourth Proportional to 989,721.35, 1,485,328.23 and 724,166.90

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Solution

The fourth proportional to 989,721.35, 1,485,328.23 and 724,166.90 is: 1,086,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,721.35 : 1,485,328.23 = 724,166.90 : x
  2. Step 2: Convert to fraction form
    989,721.35/1,485,328.23 = 724,166.90/x
  3. Step 3: Cross multiply
    989,721.35x = 1,485,328.23 × 724,166.90
  4. Step 4: Simplify right side
    989,721.35x = 1,075,625,532,374.95
  5. Step 5: Solve for x
    x = 1,075,625,532,374.95/989,721.35
  6. Step 6: Final answer
    x = 1,086,796.34

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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.