Home / 810,101.80-1,215,006.90-510,045.40

Finding the Fourth Proportional to 810,101.80, 1,215,006.90 and 510,045.40

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Solution

The fourth proportional to 810,101.80, 1,215,006.90 and 510,045.40 is: 764,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,101.80 : 1,215,006.90 = 510,045.40 : x
  2. Step 2: Convert to fraction form
    810,101.80/1,215,006.90 = 510,045.40/x
  3. Step 3: Cross multiply
    810,101.80x = 1,215,006.90 × 510,045.40
  4. Step 4: Simplify right side
    810,101.80x = 619,708,680,313.26
  5. Step 5: Solve for x
    x = 619,708,680,313.26/810,101.80
  6. Step 6: Final answer
    x = 764,976.30

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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.