Home / 543,155.10-749,919.51-415,602.78

Finding the Fourth Proportional to 543,155.10, 749,919.51 and 415,602.78

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Solution

The fourth proportional to 543,155.10, 749,919.51 and 415,602.78 is: 573,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,155.10 : 749,919.51 = 415,602.78 : x
  2. Step 2: Convert to fraction form
    543,155.10/749,919.51 = 415,602.78/x
  3. Step 3: Cross multiply
    543,155.10x = 749,919.51 × 415,602.78
  4. Step 4: Simplify right side
    543,155.10x = 311,668,633,132.24
  5. Step 5: Solve for x
    x = 311,668,633,132.24/543,155.10
  6. Step 6: Final answer
    x = 573,811.48

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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.