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Finding the Fourth Proportional to 437,513.80, 655,881.90 and 287,825.80

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Solution

The fourth proportional to 437,513.80, 655,881.90 and 287,825.80 is: 431,482.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,513.80 : 655,881.90 = 287,825.80 : x
  2. Step 2: Convert to fraction form
    437,513.80/655,881.90 = 287,825.80/x
  3. Step 3: Cross multiply
    437,513.80x = 655,881.90 × 287,825.80
  4. Step 4: Simplify right side
    437,513.80x = 188,779,732,573.02
  5. Step 5: Solve for x
    x = 188,779,732,573.02/437,513.80
  6. Step 6: Final answer
    x = 431,482.92

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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.