Home / 2,157,961.30-2,977,980.80-1,191,084.95

Finding the Fourth Proportional to 2,157,961.30, 2,977,980.80 and 1,191,084.95

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Solution

The fourth proportional to 2,157,961.30, 2,977,980.80 and 1,191,084.95 is: 1,643,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,961.30 : 2,977,980.80 = 1,191,084.95 : x
  2. Step 2: Convert to fraction form
    2,157,961.30/2,977,980.80 = 1,191,084.95/x
  3. Step 3: Cross multiply
    2,157,961.30x = 2,977,980.80 × 1,191,084.95
  4. Step 4: Simplify right side
    2,157,961.30x = 3,547,028,113,758.49
  5. Step 5: Solve for x
    x = 3,547,028,113,758.49/2,157,961.30
  6. Step 6: Final answer
    x = 1,643,694.04

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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.