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Finding the Fourth Proportional to 1,978,468, 2,965,269.36 and 912,030.88

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Solution

The fourth proportional to 1,978,468, 2,965,269.36 and 912,030.88 is: 1,366,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,468 : 2,965,269.36 = 912,030.88 : x
  2. Step 2: Convert to fraction form
    1,978,468/2,965,269.36 = 912,030.88/x
  3. Step 3: Cross multiply
    1,978,468x = 2,965,269.36 × 912,030.88
  4. Step 4: Simplify right side
    1,978,468x = 2,704,417,223,837.84
  5. Step 5: Solve for x
    x = 2,704,417,223,837.84/1,978,468
  6. Step 6: Final answer
    x = 1,366,924.93

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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.