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Finding the Fourth Proportional to 528,287.20, 791,215.80 and 433,808.80

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Solution

The fourth proportional to 528,287.20, 791,215.80 and 433,808.80 is: 649,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,287.20 : 791,215.80 = 433,808.80 : x
  2. Step 2: Convert to fraction form
    528,287.20/791,215.80 = 433,808.80/x
  3. Step 3: Cross multiply
    528,287.20x = 791,215.80 × 433,808.80
  4. Step 4: Simplify right side
    528,287.20x = 343,236,376,739.04
  5. Step 5: Solve for x
    x = 343,236,376,739.04/528,287.20
  6. Step 6: Final answer
    x = 649,715.49

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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.