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Finding the Fourth Proportional to 912,964.46, 1,369,179 and 343,935

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Solution

The fourth proportional to 912,964.46, 1,369,179 and 343,935 is: 515,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,964.46 : 1,369,179 = 343,935 : x
  2. Step 2: Convert to fraction form
    912,964.46/1,369,179 = 343,935/x
  3. Step 3: Cross multiply
    912,964.46x = 1,369,179 × 343,935
  4. Step 4: Simplify right side
    912,964.46x = 470,908,579,365
  5. Step 5: Solve for x
    x = 470,908,579,365/912,964.46
  6. Step 6: Final answer
    x = 515,801.66

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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.