Home / 778,729.58-1,074,876.65-456,509.42

Finding the Fourth Proportional to 778,729.58, 1,074,876.65 and 456,509.42

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Solution

The fourth proportional to 778,729.58, 1,074,876.65 and 456,509.42 is: 630,117.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,729.58 : 1,074,876.65 = 456,509.42 : x
  2. Step 2: Convert to fraction form
    778,729.58/1,074,876.65 = 456,509.42/x
  3. Step 3: Cross multiply
    778,729.58x = 1,074,876.65 × 456,509.42
  4. Step 4: Simplify right side
    778,729.58x = 490,691,308,406.11
  5. Step 5: Solve for x
    x = 490,691,308,406.11/778,729.58
  6. Step 6: Final answer
    x = 630,117.73

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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.