Home / 1,189,677,930.39-1,641,683,574.09-661,023,840.15

Finding the Fourth Proportional to 1,189,677,930.39, 1,641,683,574.09 and 661,023,840.15

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Solution

The fourth proportional to 1,189,677,930.39, 1,641,683,574.09 and 661,023,840.15 is: 912,172,910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,677,930.39 : 1,641,683,574.09 = 661,023,840.15 : x
  2. Step 2: Convert to fraction form
    1,189,677,930.39/1,641,683,574.09 = 661,023,840.15/x
  3. Step 3: Cross multiply
    1,189,677,930.39x = 1,641,683,574.09 × 661,023,840.15
  4. Step 4: Simplify right side
    1,189,677,930.39x = 1,085,191,980,456,148,736
  5. Step 5: Solve for x
    x = 1,085,191,980,456,148,736/1,189,677,930.39
  6. Step 6: Final answer
    x = 912,172,910.61

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Double scale
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1.5x scale

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.