Home / 778,642.83-1,074,630.20-456,479.55

Finding the Fourth Proportional to 778,642.83, 1,074,630.20 and 456,479.55

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Solution

The fourth proportional to 778,642.83, 1,074,630.20 and 456,479.55 is: 630,002.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,642.83 : 1,074,630.20 = 456,479.55 : x
  2. Step 2: Convert to fraction form
    778,642.83/1,074,630.20 = 456,479.55/x
  3. Step 3: Cross multiply
    778,642.83x = 1,074,630.20 × 456,479.55
  4. Step 4: Simplify right side
    778,642.83x = 490,546,707,830.01
  5. Step 5: Solve for x
    x = 490,546,707,830.01/778,642.83
  6. Step 6: Final answer
    x = 630,002.22

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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.