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Finding the Fourth Proportional to 1,964,985.54, 2,947,478.12 and 545,041.68

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Solution

The fourth proportional to 1,964,985.54, 2,947,478.12 and 545,041.68 is: 817,562.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,985.54 : 2,947,478.12 = 545,041.68 : x
  2. Step 2: Convert to fraction form
    1,964,985.54/2,947,478.12 = 545,041.68/x
  3. Step 3: Cross multiply
    1,964,985.54x = 2,947,478.12 × 545,041.68
  4. Step 4: Simplify right side
    1,964,985.54x = 1,606,498,426,288.04
  5. Step 5: Solve for x
    x = 1,606,498,426,288.04/1,964,985.54
  6. Step 6: Final answer
    x = 817,562.47

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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.