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Finding the Fourth Proportional to 659,686.12, 910,452.70 and 369,408.22

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Solution

The fourth proportional to 659,686.12, 910,452.70 and 369,408.22 is: 509,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,686.12 : 910,452.70 = 369,408.22 : x
  2. Step 2: Convert to fraction form
    659,686.12/910,452.70 = 369,408.22/x
  3. Step 3: Cross multiply
    659,686.12x = 910,452.70 × 369,408.22
  4. Step 4: Simplify right side
    659,686.12x = 336,328,711,301.19
  5. Step 5: Solve for x
    x = 336,328,711,301.19/659,686.12
  6. Step 6: Final answer
    x = 509,831.42

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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.