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Finding the Fourth Proportional to 709,018.68, 978,270.84 and 433,306.20

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Solution

The fourth proportional to 709,018.68, 978,270.84 and 433,306.20 is: 597,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,018.68 : 978,270.84 = 433,306.20 : x
  2. Step 2: Convert to fraction form
    709,018.68/978,270.84 = 433,306.20/x
  3. Step 3: Cross multiply
    709,018.68x = 978,270.84 × 433,306.20
  4. Step 4: Simplify right side
    709,018.68x = 423,890,820,251.21
  5. Step 5: Solve for x
    x = 423,890,820,251.21/709,018.68
  6. Step 6: Final answer
    x = 597,855.65

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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.