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Finding the Fourth Proportional to 978,426.66, 1,467,482.55 and 268,289.94

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Solution

The fourth proportional to 978,426.66, 1,467,482.55 and 268,289.94 is: 402,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,426.66 : 1,467,482.55 = 268,289.94 : x
  2. Step 2: Convert to fraction form
    978,426.66/1,467,482.55 = 268,289.94/x
  3. Step 3: Cross multiply
    978,426.66x = 1,467,482.55 × 268,289.94
  4. Step 4: Simplify right side
    978,426.66x = 393,710,805,290.55
  5. Step 5: Solve for x
    x = 393,710,805,290.55/978,426.66
  6. Step 6: Final answer
    x = 402,391.74

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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.