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Finding the Fourth Proportional to 456,642.93, 630,420.62 and 275,400.96

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Solution

The fourth proportional to 456,642.93, 630,420.62 and 275,400.96 is: 380,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,642.93 : 630,420.62 = 275,400.96 : x
  2. Step 2: Convert to fraction form
    456,642.93/630,420.62 = 275,400.96/x
  3. Step 3: Cross multiply
    456,642.93x = 630,420.62 × 275,400.96
  4. Step 4: Simplify right side
    456,642.93x = 173,618,442,574.79
  5. Step 5: Solve for x
    x = 173,618,442,574.79/456,642.93
  6. Step 6: Final answer
    x = 380,206.13

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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.