Home / 1,189,519.10-1,641,492.18-645,643.19

Finding the Fourth Proportional to 1,189,519.10, 1,641,492.18 and 645,643.19

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Solution

The fourth proportional to 1,189,519.10, 1,641,492.18 and 645,643.19 is: 890,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,519.10 : 1,641,492.18 = 645,643.19 : x
  2. Step 2: Convert to fraction form
    1,189,519.10/1,641,492.18 = 645,643.19/x
  3. Step 3: Cross multiply
    1,189,519.10x = 1,641,492.18 × 645,643.19
  4. Step 4: Simplify right side
    1,189,519.10x = 1,059,818,247,455.25
  5. Step 5: Solve for x
    x = 1,059,818,247,455.25/1,189,519.10
  6. Step 6: Final answer
    x = 890,963.62

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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.