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Finding the Fourth Proportional to 911,807.74, 1,366,488.96 and 709,647.94

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Solution

The fourth proportional to 911,807.74, 1,366,488.96 and 709,647.94 is: 1,063,520.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,807.74 : 1,366,488.96 = 709,647.94 : x
  2. Step 2: Convert to fraction form
    911,807.74/1,366,488.96 = 709,647.94/x
  3. Step 3: Cross multiply
    911,807.74x = 1,366,488.96 × 709,647.94
  4. Step 4: Simplify right side
    911,807.74x = 969,726,075,496.74
  5. Step 5: Solve for x
    x = 969,726,075,496.74/911,807.74
  6. Step 6: Final answer
    x = 1,063,520.34

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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.