Home / 1,313,043.40-1,969,565.10-426,579.40

Finding the Fourth Proportional to 1,313,043.40, 1,969,565.10 and 426,579.40

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Solution

The fourth proportional to 1,313,043.40, 1,969,565.10 and 426,579.40 is: 639,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,043.40 : 1,969,565.10 = 426,579.40 : x
  2. Step 2: Convert to fraction form
    1,313,043.40/1,969,565.10 = 426,579.40/x
  3. Step 3: Cross multiply
    1,313,043.40x = 1,969,565.10 × 426,579.40
  4. Step 4: Simplify right side
    1,313,043.40x = 840,175,898,618.94
  5. Step 5: Solve for x
    x = 840,175,898,618.94/1,313,043.40
  6. Step 6: Final answer
    x = 639,869.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.