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Finding the Fourth Proportional to 817,712, 1,226,579.04 and 256,746.56

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Solution

The fourth proportional to 817,712, 1,226,579.04 and 256,746.56 is: 385,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,712 : 1,226,579.04 = 256,746.56 : x
  2. Step 2: Convert to fraction form
    817,712/1,226,579.04 = 256,746.56/x
  3. Step 3: Cross multiply
    817,712x = 1,226,579.04 × 256,746.56
  4. Step 4: Simplify right side
    817,712x = 314,919,949,088.10
  5. Step 5: Solve for x
    x = 314,919,949,088.10/817,712
  6. Step 6: Final answer
    x = 385,123.31

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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.