Home / 716,667.32-988,979.95-394,377.23

Finding the Fourth Proportional to 716,667.32, 988,979.95 and 394,377.23

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Solution

The fourth proportional to 716,667.32, 988,979.95 and 394,377.23 is: 544,229.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,667.32 : 988,979.95 = 394,377.23 : x
  2. Step 2: Convert to fraction form
    716,667.32/988,979.95 = 394,377.23/x
  3. Step 3: Cross multiply
    716,667.32x = 988,979.95 × 394,377.23
  4. Step 4: Simplify right side
    716,667.32x = 390,031,173,206.54
  5. Step 5: Solve for x
    x = 390,031,173,206.54/716,667.32
  6. Step 6: Final answer
    x = 544,229.05

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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.