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Finding the Fourth Proportional to 581,944.95, 803,453 and 398,490.52

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Solution

The fourth proportional to 581,944.95, 803,453 and 398,490.52 is: 550,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,944.95 : 803,453 = 398,490.52 : x
  2. Step 2: Convert to fraction form
    581,944.95/803,453 = 398,490.52/x
  3. Step 3: Cross multiply
    581,944.95x = 803,453 × 398,490.52
  4. Step 4: Simplify right side
    581,944.95x = 320,168,403,765.56
  5. Step 5: Solve for x
    x = 320,168,403,765.56/581,944.95
  6. Step 6: Final answer
    x = 550,169.57

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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.