Home / 1,865,005.40-2,797,508.10-978,426.20

Finding the Fourth Proportional to 1,865,005.40, 2,797,508.10 and 978,426.20

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Solution

The fourth proportional to 1,865,005.40, 2,797,508.10 and 978,426.20 is: 1,467,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865,005.40 : 2,797,508.10 = 978,426.20 : x
  2. Step 2: Convert to fraction form
    1,865,005.40/2,797,508.10 = 978,426.20/x
  3. Step 3: Cross multiply
    1,865,005.40x = 2,797,508.10 × 978,426.20
  4. Step 4: Simplify right side
    1,865,005.40x = 2,737,155,219,752.22
  5. Step 5: Solve for x
    x = 2,737,155,219,752.22/1,865,005.40
  6. Step 6: Final answer
    x = 1,467,639.30

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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.