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Finding the Fourth Proportional to 1,977,482.54, 2,966,223.78 and 912,209.42

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Solution

The fourth proportional to 1,977,482.54, 2,966,223.78 and 912,209.42 is: 1,368,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,482.54 : 2,966,223.78 = 912,209.42 : x
  2. Step 2: Convert to fraction form
    1,977,482.54/2,966,223.78 = 912,209.42/x
  3. Step 3: Cross multiply
    1,977,482.54x = 2,966,223.78 × 912,209.42
  4. Step 4: Simplify right side
    1,977,482.54x = 2,705,817,273,944.01
  5. Step 5: Solve for x
    x = 2,705,817,273,944.01/1,977,482.54
  6. Step 6: Final answer
    x = 1,368,314.12

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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.