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Finding the Fourth Proportional to 639,264.40, 958,232.40 and 260,022.40

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Solution

The fourth proportional to 639,264.40, 958,232.40 and 260,022.40 is: 389,763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,264.40 : 958,232.40 = 260,022.40 : x
  2. Step 2: Convert to fraction form
    639,264.40/958,232.40 = 260,022.40/x
  3. Step 3: Cross multiply
    639,264.40x = 958,232.40 × 260,022.40
  4. Step 4: Simplify right side
    639,264.40x = 249,161,888,405.76
  5. Step 5: Solve for x
    x = 249,161,888,405.76/639,264.40
  6. Step 6: Final answer
    x = 389,763.43

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1.5x scale

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.