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Finding the Fourth Proportional to 661,307.09, 912,545.37 and 366,964.20

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Solution

The fourth proportional to 661,307.09, 912,545.37 and 366,964.20 is: 506,378.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,307.09 : 912,545.37 = 366,964.20 : x
  2. Step 2: Convert to fraction form
    661,307.09/912,545.37 = 366,964.20/x
  3. Step 3: Cross multiply
    661,307.09x = 912,545.37 × 366,964.20
  4. Step 4: Simplify right side
    661,307.09x = 334,871,481,665.75
  5. Step 5: Solve for x
    x = 334,871,481,665.75/661,307.09
  6. Step 6: Final answer
    x = 506,378.19

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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.