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Finding the Fourth Proportional to 521,922.47, 720,254.37 and 304,260.39

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Solution

The fourth proportional to 521,922.47, 720,254.37 and 304,260.39 is: 419,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,922.47 : 720,254.37 = 304,260.39 : x
  2. Step 2: Convert to fraction form
    521,922.47/720,254.37 = 304,260.39/x
  3. Step 3: Cross multiply
    521,922.47x = 720,254.37 × 304,260.39
  4. Step 4: Simplify right side
    521,922.47x = 219,144,875,515.40
  5. Step 5: Solve for x
    x = 219,144,875,515.40/521,922.47
  6. Step 6: Final answer
    x = 419,880.14

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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.