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Finding the Fourth Proportional to 660,499.65, 989,583.08 and 541,526.85

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Solution

The fourth proportional to 660,499.65, 989,583.08 and 541,526.85 is: 811,333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,499.65 : 989,583.08 = 541,526.85 : x
  2. Step 2: Convert to fraction form
    660,499.65/989,583.08 = 541,526.85/x
  3. Step 3: Cross multiply
    660,499.65x = 989,583.08 × 541,526.85
  4. Step 4: Simplify right side
    660,499.65x = 535,885,805,418.06
  5. Step 5: Solve for x
    x = 535,885,805,418.06/660,499.65
  6. Step 6: Final answer
    x = 811,333.97

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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.