Home / 1,121,065-1,681,581.70-521,690.92

Finding the Fourth Proportional to 1,121,065, 1,681,581.70 and 521,690.92

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Solution

The fourth proportional to 1,121,065, 1,681,581.70 and 521,690.92 is: 782,529.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,065 : 1,681,581.70 = 521,690.92 : x
  2. Step 2: Convert to fraction form
    1,121,065/1,681,581.70 = 521,690.92/x
  3. Step 3: Cross multiply
    1,121,065x = 1,681,581.70 × 521,690.92
  4. Step 4: Simplify right side
    1,121,065x = 877,265,904,128.16
  5. Step 5: Solve for x
    x = 877,265,904,128.16/1,121,065
  6. Step 6: Final answer
    x = 782,529.03

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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.