Home / 1,225,840,947.90-1,691,696,398.23-668,959,889.10

Finding the Fourth Proportional to 1,225,840,947.90, 1,691,696,398.23 and 668,959,889.10

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Solution

The fourth proportional to 1,225,840,947.90, 1,691,696,398.23 and 668,959,889.10 is: 923,184,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,840,947.90 : 1,691,696,398.23 = 668,959,889.10 : x
  2. Step 2: Convert to fraction form
    1,225,840,947.90/1,691,696,398.23 = 668,959,889.10/x
  3. Step 3: Cross multiply
    1,225,840,947.90x = 1,691,696,398.23 × 668,959,889.10
  4. Step 4: Simplify right side
    1,225,840,947.90x = 1,131,677,034,950,810,240
  5. Step 5: Solve for x
    x = 1,131,677,034,950,810,240/1,225,840,947.90
  6. Step 6: Final answer
    x = 923,184,232.74

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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.