Home / 1,290,908.49-1,781,443.86-710,119.13

Finding the Fourth Proportional to 1,290,908.49, 1,781,443.86 and 710,119.13

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Solution

The fourth proportional to 1,290,908.49, 1,781,443.86 and 710,119.13 is: 979,958.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,908.49 : 1,781,443.86 = 710,119.13 : x
  2. Step 2: Convert to fraction form
    1,290,908.49/1,781,443.86 = 710,119.13/x
  3. Step 3: Cross multiply
    1,290,908.49x = 1,781,443.86 × 710,119.13
  4. Step 4: Simplify right side
    1,290,908.49x = 1,265,037,359,444.40
  5. Step 5: Solve for x
    x = 1,265,037,359,444.40/1,290,908.49
  6. Step 6: Final answer
    x = 979,958.97

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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.