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Finding the Fourth Proportional to 1,731,658.60, 2,388,141.54 and 1,087,138.84

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Solution

The fourth proportional to 1,731,658.60, 2,388,141.54 and 1,087,138.84 is: 1,499,280.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731,658.60 : 2,388,141.54 = 1,087,138.84 : x
  2. Step 2: Convert to fraction form
    1,731,658.60/2,388,141.54 = 1,087,138.84/x
  3. Step 3: Cross multiply
    1,731,658.60x = 2,388,141.54 × 1,087,138.84
  4. Step 4: Simplify right side
    1,731,658.60x = 2,596,241,423,551.41
  5. Step 5: Solve for x
    x = 2,596,241,423,551.41/1,731,658.60
  6. Step 6: Final answer
    x = 1,499,280.18

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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.