Home / 1,245,585,728.80-1,867,103,134.80-727,749,618.40

Finding the Fourth Proportional to 1,245,585,728.80, 1,867,103,134.80 and 727,749,618.40

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Solution

The fourth proportional to 1,245,585,728.80, 1,867,103,134.80 and 727,749,618.40 is: 1,090,879,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,585,728.80 : 1,867,103,134.80 = 727,749,618.40 : x
  2. Step 2: Convert to fraction form
    1,245,585,728.80/1,867,103,134.80 = 727,749,618.40/x
  3. Step 3: Cross multiply
    1,245,585,728.80x = 1,867,103,134.80 × 727,749,618.40
  4. Step 4: Simplify right side
    1,245,585,728.80x = 1,358,783,593,864,143,616
  5. Step 5: Solve for x
    x = 1,358,783,593,864,143,616/1,245,585,728.80
  6. Step 6: Final answer
    x = 1,090,879,224.49

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Double scale
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1.5x scale

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.