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Finding the Fourth Proportional to 450,622.76, 621,889.50 and 259,648.52

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Solution

The fourth proportional to 450,622.76, 621,889.50 and 259,648.52 is: 358,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,622.76 : 621,889.50 = 259,648.52 : x
  2. Step 2: Convert to fraction form
    450,622.76/621,889.50 = 259,648.52/x
  3. Step 3: Cross multiply
    450,622.76x = 621,889.50 × 259,648.52
  4. Step 4: Simplify right side
    450,622.76x = 161,472,688,278.54
  5. Step 5: Solve for x
    x = 161,472,688,278.54/450,622.76
  6. Step 6: Final answer
    x = 358,332.30

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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.