Home / 1,189,585.71-1,641,629.70-645,721.20

Finding the Fourth Proportional to 1,189,585.71, 1,641,629.70 and 645,721.20

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Solution

The fourth proportional to 1,189,585.71, 1,641,629.70 and 645,721.20 is: 891,096.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,585.71 : 1,641,629.70 = 645,721.20 : x
  2. Step 2: Convert to fraction form
    1,189,585.71/1,641,629.70 = 645,721.20/x
  3. Step 3: Cross multiply
    1,189,585.71x = 1,641,629.70 × 645,721.20
  4. Step 4: Simplify right side
    1,189,585.71x = 1,060,035,099,839.64
  5. Step 5: Solve for x
    x = 1,060,035,099,839.64/1,189,585.71
  6. Step 6: Final answer
    x = 891,096.03

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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.