Home / 415,511.20-623,266.80-257,226.40

Finding the Fourth Proportional to 415,511.20, 623,266.80 and 257,226.40

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Solution

The fourth proportional to 415,511.20, 623,266.80 and 257,226.40 is: 385,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,511.20 : 623,266.80 = 257,226.40 : x
  2. Step 2: Convert to fraction form
    415,511.20/623,266.80 = 257,226.40/x
  3. Step 3: Cross multiply
    415,511.20x = 623,266.80 × 257,226.40
  4. Step 4: Simplify right side
    415,511.20x = 160,320,675,203.52
  5. Step 5: Solve for x
    x = 160,320,675,203.52/415,511.20
  6. Step 6: Final answer
    x = 385,839.60

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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.