Home / 1,218,509.69-1,681,569.03-667,248.55

Finding the Fourth Proportional to 1,218,509.69, 1,681,569.03 and 667,248.55

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Solution

The fourth proportional to 1,218,509.69, 1,681,569.03 and 667,248.55 is: 920,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,509.69 : 1,681,569.03 = 667,248.55 : x
  2. Step 2: Convert to fraction form
    1,218,509.69/1,681,569.03 = 667,248.55/x
  3. Step 3: Cross multiply
    1,218,509.69x = 1,681,569.03 × 667,248.55
  4. Step 4: Simplify right side
    1,218,509.69x = 1,122,024,496,992.41
  5. Step 5: Solve for x
    x = 1,122,024,496,992.41/1,218,509.69
  6. Step 6: Final answer
    x = 920,817.05

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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.