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Finding the Fourth Proportional to 456,708.30, 685,062.45 and 438,045.90

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Solution

The fourth proportional to 456,708.30, 685,062.45 and 438,045.90 is: 657,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,708.30 : 685,062.45 = 438,045.90 : x
  2. Step 2: Convert to fraction form
    456,708.30/685,062.45 = 438,045.90/x
  3. Step 3: Cross multiply
    456,708.30x = 685,062.45 × 438,045.90
  4. Step 4: Simplify right side
    456,708.30x = 300,088,797,466.46
  5. Step 5: Solve for x
    x = 300,088,797,466.46/456,708.30
  6. Step 6: Final answer
    x = 657,068.85

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Similar ratio
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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.