Home / 456,985.68-630,550.62-287,121.39

Finding the Fourth Proportional to 456,985.68, 630,550.62 and 287,121.39

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Solution

The fourth proportional to 456,985.68, 630,550.62 and 287,121.39 is: 396,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,985.68 : 630,550.62 = 287,121.39 : x
  2. Step 2: Convert to fraction form
    456,985.68/630,550.62 = 287,121.39/x
  3. Step 3: Cross multiply
    456,985.68x = 630,550.62 × 287,121.39
  4. Step 4: Simplify right side
    456,985.68x = 181,044,570,479.76
  5. Step 5: Solve for x
    x = 181,044,570,479.76/456,985.68
  6. Step 6: Final answer
    x = 396,171.21

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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.