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Finding the Fourth Proportional to 562,959.95, 776,940.19 and 321,278.90

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Solution

The fourth proportional to 562,959.95, 776,940.19 and 321,278.90 is: 443,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,959.95 : 776,940.19 = 321,278.90 : x
  2. Step 2: Convert to fraction form
    562,959.95/776,940.19 = 321,278.90/x
  3. Step 3: Cross multiply
    562,959.95x = 776,940.19 × 321,278.90
  4. Step 4: Simplify right side
    562,959.95x = 249,614,484,921.09
  5. Step 5: Solve for x
    x = 249,614,484,921.09/562,959.95
  6. Step 6: Final answer
    x = 443,396.53

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1.5x scale

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.