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Finding the Fourth Proportional to 659,758.05, 989,637.08 and 493,870.05

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Solution

The fourth proportional to 659,758.05, 989,637.08 and 493,870.05 is: 740,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,758.05 : 989,637.08 = 493,870.05 : x
  2. Step 2: Convert to fraction form
    659,758.05/989,637.08 = 493,870.05/x
  3. Step 3: Cross multiply
    659,758.05x = 989,637.08 × 493,870.05
  4. Step 4: Simplify right side
    659,758.05x = 488,752,111,712.10
  5. Step 5: Solve for x
    x = 488,752,111,712.10/659,758.05
  6. Step 6: Final answer
    x = 740,805.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.