Home / 516,419.03-712,612.90-286,961.78

Finding the Fourth Proportional to 516,419.03, 712,612.90 and 286,961.78

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Solution

The fourth proportional to 516,419.03, 712,612.90 and 286,961.78 is: 395,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,419.03 : 712,612.90 = 286,961.78 : x
  2. Step 2: Convert to fraction form
    516,419.03/712,612.90 = 286,961.78/x
  3. Step 3: Cross multiply
    516,419.03x = 712,612.90 × 286,961.78
  4. Step 4: Simplify right side
    516,419.03x = 204,492,666,234.96
  5. Step 5: Solve for x
    x = 204,492,666,234.96/516,419.03
  6. Step 6: Final answer
    x = 395,982.05

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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.