Home / 1,225,840,949.15-1,691,696,399.96-668,959,890.35

Finding the Fourth Proportional to 1,225,840,949.15, 1,691,696,399.96 and 668,959,890.35

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Solution

The fourth proportional to 1,225,840,949.15, 1,691,696,399.96 and 668,959,890.35 is: 923,184,234.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,840,949.15 : 1,691,696,399.96 = 668,959,890.35 : x
  2. Step 2: Convert to fraction form
    1,225,840,949.15/1,691,696,399.96 = 668,959,890.35/x
  3. Step 3: Cross multiply
    1,225,840,949.15x = 1,691,696,399.96 × 668,959,890.35
  4. Step 4: Simplify right side
    1,225,840,949.15x = 1,131,677,038,219,386,496
  5. Step 5: Solve for x
    x = 1,131,677,038,219,386,496/1,225,840,949.15
  6. Step 6: Final answer
    x = 923,184,234.47

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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.