Home / 420,022.47-630,032.52-104,479.41

Finding the Fourth Proportional to 420,022.47, 630,032.52 and 104,479.41

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Solution

The fourth proportional to 420,022.47, 630,032.52 and 104,479.41 is: 156,718.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,022.47 : 630,032.52 = 104,479.41 : x
  2. Step 2: Convert to fraction form
    420,022.47/630,032.52 = 104,479.41/x
  3. Step 3: Cross multiply
    420,022.47x = 630,032.52 × 104,479.41
  4. Step 4: Simplify right side
    420,022.47x = 65,825,425,970.41
  5. Step 5: Solve for x
    x = 65,825,425,970.41/420,022.47
  6. Step 6: Final answer
    x = 156,718.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.