Home / 1,245,813.20-1,864,783.20-978,124.40

Finding the Fourth Proportional to 1,245,813.20, 1,864,783.20 and 978,124.40

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Solution

The fourth proportional to 1,245,813.20, 1,864,783.20 and 978,124.40 is: 1,464,095.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,813.20 : 1,864,783.20 = 978,124.40 : x
  2. Step 2: Convert to fraction form
    1,245,813.20/1,864,783.20 = 978,124.40/x
  3. Step 3: Cross multiply
    1,245,813.20x = 1,864,783.20 × 978,124.40
  4. Step 4: Simplify right side
    1,245,813.20x = 1,823,989,948,630.08
  5. Step 5: Solve for x
    x = 1,823,989,948,630.08/1,245,813.20
  6. Step 6: Final answer
    x = 1,464,095.86

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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.