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Finding the Fourth Proportional to 1,047,687.10, 1,569,197.85 and 907,719.10

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Solution

The fourth proportional to 1,047,687.10, 1,569,197.85 and 907,719.10 is: 1,359,557.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,687.10 : 1,569,197.85 = 907,719.10 : x
  2. Step 2: Convert to fraction form
    1,047,687.10/1,569,197.85 = 907,719.10/x
  3. Step 3: Cross multiply
    1,047,687.10x = 1,569,197.85 × 907,719.10
  4. Step 4: Simplify right side
    1,047,687.10x = 1,424,390,860,123.94
  5. Step 5: Solve for x
    x = 1,424,390,860,123.94/1,047,687.10
  6. Step 6: Final answer
    x = 1,359,557.51

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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.