Home / 1,208,015.49-1,665,691.76-771,856.61

Finding the Fourth Proportional to 1,208,015.49, 1,665,691.76 and 771,856.61

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Solution

The fourth proportional to 1,208,015.49, 1,665,691.76 and 771,856.61 is: 1,064,287.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,015.49 : 1,665,691.76 = 771,856.61 : x
  2. Step 2: Convert to fraction form
    1,208,015.49/1,665,691.76 = 771,856.61/x
  3. Step 3: Cross multiply
    1,208,015.49x = 1,665,691.76 × 771,856.61
  4. Step 4: Simplify right side
    1,208,015.49x = 1,285,675,182,990.79
  5. Step 5: Solve for x
    x = 1,285,675,182,990.79/1,208,015.49
  6. Step 6: Final answer
    x = 1,064,287.00

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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.