Home / 528,590.04-729,348.73-321,719.87

Finding the Fourth Proportional to 528,590.04, 729,348.73 and 321,719.87

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Solution

The fourth proportional to 528,590.04, 729,348.73 and 321,719.87 is: 443,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,590.04 : 729,348.73 = 321,719.87 : x
  2. Step 2: Convert to fraction form
    528,590.04/729,348.73 = 321,719.87/x
  3. Step 3: Cross multiply
    528,590.04x = 729,348.73 × 321,719.87
  4. Step 4: Simplify right side
    528,590.04x = 234,645,974,149.22
  5. Step 5: Solve for x
    x = 234,645,974,149.22/528,590.04
  6. Step 6: Final answer
    x = 443,909.19

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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.