Home / 1,384,169.32-1,909,827.66-840,291.40

Finding the Fourth Proportional to 1,384,169.32, 1,909,827.66 and 840,291.40

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Solution

The fourth proportional to 1,384,169.32, 1,909,827.66 and 840,291.40 is: 1,159,404.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,169.32 : 1,909,827.66 = 840,291.40 : x
  2. Step 2: Convert to fraction form
    1,384,169.32/1,909,827.66 = 840,291.40/x
  3. Step 3: Cross multiply
    1,384,169.32x = 1,909,827.66 × 840,291.40
  4. Step 4: Simplify right side
    1,384,169.32x = 1,604,811,758,180.12
  5. Step 5: Solve for x
    x = 1,604,811,758,180.12/1,384,169.32
  6. Step 6: Final answer
    x = 1,159,404.23

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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.