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Finding the Fourth Proportional to 437,551.80, 655,343.55 and 260,404.80

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Solution

The fourth proportional to 437,551.80, 655,343.55 and 260,404.80 is: 390,021.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,551.80 : 655,343.55 = 260,404.80 : x
  2. Step 2: Convert to fraction form
    437,551.80/655,343.55 = 260,404.80/x
  3. Step 3: Cross multiply
    437,551.80x = 655,343.55 × 260,404.80
  4. Step 4: Simplify right side
    437,551.80x = 170,654,606,069.04
  5. Step 5: Solve for x
    x = 170,654,606,069.04/437,551.80
  6. Step 6: Final answer
    x = 390,021.49

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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.