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Finding the Fourth Proportional to 661,367.11, 912,682.85 and 367,013.88

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Solution

The fourth proportional to 661,367.11, 912,682.85 and 367,013.88 is: 506,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,367.11 : 912,682.85 = 367,013.88 : x
  2. Step 2: Convert to fraction form
    661,367.11/912,682.85 = 367,013.88/x
  3. Step 3: Cross multiply
    661,367.11x = 912,682.85 × 367,013.88
  4. Step 4: Simplify right side
    661,367.11x = 334,967,275,810.90
  5. Step 5: Solve for x
    x = 334,967,275,810.90/661,367.11
  6. Step 6: Final answer
    x = 506,477.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.