Home / 1,225,840,947.40-1,691,696,397.54-668,959,888.60

Finding the Fourth Proportional to 1,225,840,947.40, 1,691,696,397.54 and 668,959,888.60

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Solution

The fourth proportional to 1,225,840,947.40, 1,691,696,397.54 and 668,959,888.60 is: 923,184,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,840,947.40 : 1,691,696,397.54 = 668,959,888.60 : x
  2. Step 2: Convert to fraction form
    1,225,840,947.40/1,691,696,397.54 = 668,959,888.60/x
  3. Step 3: Cross multiply
    1,225,840,947.40x = 1,691,696,397.54 × 668,959,888.60
  4. Step 4: Simplify right side
    1,225,840,947.40x = 1,131,677,033,643,379,712
  5. Step 5: Solve for x
    x = 1,131,677,033,643,379,712/1,225,840,947.40
  6. Step 6: Final answer
    x = 923,184,232.05

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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.