Home / 326,432.03-489,591.64-86,547.59

Finding the Fourth Proportional to 326,432.03, 489,591.64 and 86,547.59

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Solution

The fourth proportional to 326,432.03, 489,591.64 and 86,547.59 is: 129,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,432.03 : 489,591.64 = 86,547.59 : x
  2. Step 2: Convert to fraction form
    326,432.03/489,591.64 = 86,547.59/x
  3. Step 3: Cross multiply
    326,432.03x = 489,591.64 × 86,547.59
  4. Step 4: Simplify right side
    326,432.03x = 42,372,976,022.34
  5. Step 5: Solve for x
    x = 42,372,976,022.34/326,432.03
  6. Step 6: Final answer
    x = 129,806.43

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1.5x scale

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.