Home / 645,988.10-891,454.91-359,508.11

Finding the Fourth Proportional to 645,988.10, 891,454.91 and 359,508.11

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Solution

The fourth proportional to 645,988.10, 891,454.91 and 359,508.11 is: 496,116.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,988.10 : 891,454.91 = 359,508.11 : x
  2. Step 2: Convert to fraction form
    645,988.10/891,454.91 = 359,508.11/x
  3. Step 3: Cross multiply
    645,988.10x = 891,454.91 × 359,508.11
  4. Step 4: Simplify right side
    645,988.10x = 320,485,263,589.51
  5. Step 5: Solve for x
    x = 320,485,263,589.51/645,988.10
  6. Step 6: Final answer
    x = 496,116.36

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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.