Home / 867,720.91-1,302,420.96-418,757.83

Finding the Fourth Proportional to 867,720.91, 1,302,420.96 and 418,757.83

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Solution

The fourth proportional to 867,720.91, 1,302,420.96 and 418,757.83 is: 628,541.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,720.91 : 1,302,420.96 = 418,757.83 : x
  2. Step 2: Convert to fraction form
    867,720.91/1,302,420.96 = 418,757.83/x
  3. Step 3: Cross multiply
    867,720.91x = 1,302,420.96 × 418,757.83
  4. Step 4: Simplify right side
    867,720.91x = 545,398,968,444.01
  5. Step 5: Solve for x
    x = 545,398,968,444.01/867,720.91
  6. Step 6: Final answer
    x = 628,541.93

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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.