Home / 645,982.80-891,444.12-359,500.32

Finding the Fourth Proportional to 645,982.80, 891,444.12 and 359,500.32

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Solution

The fourth proportional to 645,982.80, 891,444.12 and 359,500.32 is: 496,103.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,982.80 : 891,444.12 = 359,500.32 : x
  2. Step 2: Convert to fraction form
    645,982.80/891,444.12 = 359,500.32/x
  3. Step 3: Cross multiply
    645,982.80x = 891,444.12 × 359,500.32
  4. Step 4: Simplify right side
    645,982.80x = 320,474,446,402.12
  5. Step 5: Solve for x
    x = 320,474,446,402.12/645,982.80
  6. Step 6: Final answer
    x = 496,103.68

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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.