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Finding the Fourth Proportional to 660,282.35, 989,536.57 and 360,313.43

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Solution

The fourth proportional to 660,282.35, 989,536.57 and 360,313.43 is: 539,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,282.35 : 989,536.57 = 360,313.43 : x
  2. Step 2: Convert to fraction form
    660,282.35/989,536.57 = 360,313.43/x
  3. Step 3: Cross multiply
    660,282.35x = 989,536.57 × 360,313.43
  4. Step 4: Simplify right side
    660,282.35x = 356,543,309,798.67
  5. Step 5: Solve for x
    x = 356,543,309,798.67/660,282.35
  6. Step 6: Final answer
    x = 539,986.13

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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.