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Finding the Fourth Proportional to 488,409.40, 732,176.70 and 320,010.40

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Solution

The fourth proportional to 488,409.40, 732,176.70 and 320,010.40 is: 479,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,409.40 : 732,176.70 = 320,010.40 : x
  2. Step 2: Convert to fraction form
    488,409.40/732,176.70 = 320,010.40/x
  3. Step 3: Cross multiply
    488,409.40x = 732,176.70 × 320,010.40
  4. Step 4: Simplify right side
    488,409.40x = 234,304,158,637.68
  5. Step 5: Solve for x
    x = 234,304,158,637.68/488,409.40
  6. Step 6: Final answer
    x = 479,729.01

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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.