Home / 861,064.95-1,290,897.58-300,493.11

Finding the Fourth Proportional to 861,064.95, 1,290,897.58 and 300,493.11

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Solution

The fourth proportional to 861,064.95, 1,290,897.58 and 300,493.11 is: 450,495.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,064.95 : 1,290,897.58 = 300,493.11 : x
  2. Step 2: Convert to fraction form
    861,064.95/1,290,897.58 = 300,493.11/x
  3. Step 3: Cross multiply
    861,064.95x = 1,290,897.58 × 300,493.11
  4. Step 4: Simplify right side
    861,064.95x = 387,905,828,505.67
  5. Step 5: Solve for x
    x = 387,905,828,505.67/861,064.95
  6. Step 6: Final answer
    x = 450,495.43

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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.