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Finding the Fourth Proportional to 1,360,803.68, 1,877,787.08 and 787,882.64

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Solution

The fourth proportional to 1,360,803.68, 1,877,787.08 and 787,882.64 is: 1,087,207.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360,803.68 : 1,877,787.08 = 787,882.64 : x
  2. Step 2: Convert to fraction form
    1,360,803.68/1,877,787.08 = 787,882.64/x
  3. Step 3: Cross multiply
    1,360,803.68x = 1,877,787.08 × 787,882.64
  4. Step 4: Simplify right side
    1,360,803.68x = 1,479,475,841,948.29
  5. Step 5: Solve for x
    x = 1,479,475,841,948.29/1,360,803.68
  6. Step 6: Final answer
    x = 1,087,207.41

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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.