Home / 630,420.23-870,046.92-385,548.23

Finding the Fourth Proportional to 630,420.23, 870,046.92 and 385,548.23

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Solution

The fourth proportional to 630,420.23, 870,046.92 and 385,548.23 is: 532,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,420.23 : 870,046.92 = 385,548.23 : x
  2. Step 2: Convert to fraction form
    630,420.23/870,046.92 = 385,548.23/x
  3. Step 3: Cross multiply
    630,420.23x = 870,046.92 × 385,548.23
  4. Step 4: Simplify right side
    630,420.23x = 335,445,045,672.72
  5. Step 5: Solve for x
    x = 335,445,045,672.72/630,420.23
  6. Step 6: Final answer
    x = 532,097.53

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Similar ratio
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1.5x scale

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.