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Finding the Fourth Proportional to 545,495.56, 817,969.68 and 317,864.92

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Solution

The fourth proportional to 545,495.56, 817,969.68 and 317,864.92 is: 476,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,495.56 : 817,969.68 = 317,864.92 : x
  2. Step 2: Convert to fraction form
    545,495.56/817,969.68 = 317,864.92/x
  3. Step 3: Cross multiply
    545,495.56x = 817,969.68 × 317,864.92
  4. Step 4: Simplify right side
    545,495.56x = 260,003,866,895.63
  5. Step 5: Solve for x
    x = 260,003,866,895.63/545,495.56
  6. Step 6: Final answer
    x = 476,637.92

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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.