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Finding the Fourth Proportional to 590,862.12, 815,386.50 and 322,588.20

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Solution

The fourth proportional to 590,862.12, 815,386.50 and 322,588.20 is: 445,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,862.12 : 815,386.50 = 322,588.20 : x
  2. Step 2: Convert to fraction form
    590,862.12/815,386.50 = 322,588.20/x
  3. Step 3: Cross multiply
    590,862.12x = 815,386.50 × 322,588.20
  4. Step 4: Simplify right side
    590,862.12x = 263,034,063,339.30
  5. Step 5: Solve for x
    x = 263,034,063,339.30/590,862.12
  6. Step 6: Final answer
    x = 445,169.95

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1.5x scale

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.