Home / 1,225,195,094.64-1,690,769,221.56-668,278,124.40

Finding the Fourth Proportional to 1,225,195,094.64, 1,690,769,221.56 and 668,278,124.40

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Solution

The fourth proportional to 1,225,195,094.64, 1,690,769,221.56 and 668,278,124.40 is: 922,223,806.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,195,094.64 : 1,690,769,221.56 = 668,278,124.40 : x
  2. Step 2: Convert to fraction form
    1,225,195,094.64/1,690,769,221.56 = 668,278,124.40/x
  3. Step 3: Cross multiply
    1,225,195,094.64x = 1,690,769,221.56 × 668,278,124.40
  4. Step 4: Simplify right side
    1,225,195,094.64x = 1,129,904,084,177,364,736
  5. Step 5: Solve for x
    x = 1,129,904,084,177,364,736/1,225,195,094.64
  6. Step 6: Final answer
    x = 922,223,806.74

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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.