Home / 1,189,349.91-1,641,315.14-645,490.39

Finding the Fourth Proportional to 1,189,349.91, 1,641,315.14 and 645,490.39

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Solution

The fourth proportional to 1,189,349.91, 1,641,315.14 and 645,490.39 is: 890,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,349.91 : 1,641,315.14 = 645,490.39 : x
  2. Step 2: Convert to fraction form
    1,189,349.91/1,641,315.14 = 645,490.39/x
  3. Step 3: Cross multiply
    1,189,349.91x = 1,641,315.14 × 645,490.39
  4. Step 4: Simplify right side
    1,189,349.91x = 1,059,453,151,707.27
  5. Step 5: Solve for x
    x = 1,059,453,151,707.27/1,189,349.91
  6. Step 6: Final answer
    x = 890,783.40

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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.