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Finding the Fourth Proportional to 659,686.62, 910,453.40 and 369,408.72

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Solution

The fourth proportional to 659,686.62, 910,453.40 and 369,408.72 is: 509,832.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,686.62 : 910,453.40 = 369,408.72 : x
  2. Step 2: Convert to fraction form
    659,686.62/910,453.40 = 369,408.72/x
  3. Step 3: Cross multiply
    659,686.62x = 910,453.40 × 369,408.72
  4. Step 4: Simplify right side
    659,686.62x = 336,329,423,266.60
  5. Step 5: Solve for x
    x = 336,329,423,266.60/659,686.62
  6. Step 6: Final answer
    x = 509,832.11

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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.