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Finding the Fourth Proportional to 978,184.94, 1,349,878.11 and 548,463.74

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Solution

The fourth proportional to 978,184.94, 1,349,878.11 and 548,463.74 is: 756,870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,184.94 : 1,349,878.11 = 548,463.74 : x
  2. Step 2: Convert to fraction form
    978,184.94/1,349,878.11 = 548,463.74/x
  3. Step 3: Cross multiply
    978,184.94x = 1,349,878.11 × 548,463.74
  4. Step 4: Simplify right side
    978,184.94x = 740,359,196,754.73
  5. Step 5: Solve for x
    x = 740,359,196,754.73/978,184.94
  6. Step 6: Final answer
    x = 756,870.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.