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Finding the Fourth Proportional to 777,489.60, 1,072,953.36 and 433,360.80

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Solution

The fourth proportional to 777,489.60, 1,072,953.36 and 433,360.80 is: 598,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,489.60 : 1,072,953.36 = 433,360.80 : x
  2. Step 2: Convert to fraction form
    777,489.60/1,072,953.36 = 433,360.80/x
  3. Step 3: Cross multiply
    777,489.60x = 1,072,953.36 × 433,360.80
  4. Step 4: Simplify right side
    777,489.60x = 464,975,926,452.29
  5. Step 5: Solve for x
    x = 464,975,926,452.29/777,489.60
  6. Step 6: Final answer
    x = 598,047.78

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1.5x scale

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.