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Finding the Fourth Proportional to 1,664,595.88, 2,495,844.06 and 917,166.76

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Solution

The fourth proportional to 1,664,595.88, 2,495,844.06 and 917,166.76 is: 1,375,171.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,595.88 : 2,495,844.06 = 917,166.76 : x
  2. Step 2: Convert to fraction form
    1,664,595.88/2,495,844.06 = 917,166.76/x
  3. Step 3: Cross multiply
    1,664,595.88x = 2,495,844.06 × 917,166.76
  4. Step 4: Simplify right side
    1,664,595.88x = 2,289,105,209,975.45
  5. Step 5: Solve for x
    x = 2,289,105,209,975.45/1,664,595.88
  6. Step 6: Final answer
    x = 1,375,171.74

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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.