Home / 660,557.57-989,332.31-393,766.82

Finding the Fourth Proportional to 660,557.57, 989,332.31 and 393,766.82

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Solution

The fourth proportional to 660,557.57, 989,332.31 and 393,766.82 is: 589,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,557.57 : 989,332.31 = 393,766.82 : x
  2. Step 2: Convert to fraction form
    660,557.57/989,332.31 = 393,766.82/x
  3. Step 3: Cross multiply
    660,557.57x = 989,332.31 × 393,766.82
  4. Step 4: Simplify right side
    660,557.57x = 389,566,237,379.71
  5. Step 5: Solve for x
    x = 389,566,237,379.71/660,557.57
  6. Step 6: Final answer
    x = 589,753.65

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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.