Home / 1,280,381.51-1,766,962.13-707,458.61

Finding the Fourth Proportional to 1,280,381.51, 1,766,962.13 and 707,458.61

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Solution

The fourth proportional to 1,280,381.51, 1,766,962.13 and 707,458.61 is: 976,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,381.51 : 1,766,962.13 = 707,458.61 : x
  2. Step 2: Convert to fraction form
    1,280,381.51/1,766,962.13 = 707,458.61/x
  3. Step 3: Cross multiply
    1,280,381.51x = 1,766,962.13 × 707,458.61
  4. Step 4: Simplify right side
    1,280,381.51x = 1,250,052,560,040.34
  5. Step 5: Solve for x
    x = 1,250,052,560,040.34/1,280,381.51
  6. Step 6: Final answer
    x = 976,312.57

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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.