Home / 535,403.52-738,823.68-320,561.28

Finding the Fourth Proportional to 535,403.52, 738,823.68 and 320,561.28

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Solution

The fourth proportional to 535,403.52, 738,823.68 and 320,561.28 is: 442,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,403.52 : 738,823.68 = 320,561.28 : x
  2. Step 2: Convert to fraction form
    535,403.52/738,823.68 = 320,561.28/x
  3. Step 3: Cross multiply
    535,403.52x = 738,823.68 × 320,561.28
  4. Step 4: Simplify right side
    535,403.52x = 236,838,264,555.11
  5. Step 5: Solve for x
    x = 236,838,264,555.11/535,403.52
  6. Step 6: Final answer
    x = 442,354.70

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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.