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Finding the Fourth Proportional to 561,568.47, 774,953.08 and 306,921.48

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Solution

The fourth proportional to 561,568.47, 774,953.08 and 306,921.48 is: 423,545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,568.47 : 774,953.08 = 306,921.48 : x
  2. Step 2: Convert to fraction form
    561,568.47/774,953.08 = 306,921.48/x
  3. Step 3: Cross multiply
    561,568.47x = 774,953.08 × 306,921.48
  4. Step 4: Simplify right side
    561,568.47x = 237,849,746,244.16
  5. Step 5: Solve for x
    x = 237,849,746,244.16/561,568.47
  6. Step 6: Final answer
    x = 423,545.41

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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.