Home / 1,407,232,286.91-1,942,152,784.07-812,515,772.52

Finding the Fourth Proportional to 1,407,232,286.91, 1,942,152,784.07 and 812,515,772.52

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Solution

The fourth proportional to 1,407,232,286.91, 1,942,152,784.07 and 812,515,772.52 is: 1,121,371,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,232,286.91 : 1,942,152,784.07 = 812,515,772.52 : x
  2. Step 2: Convert to fraction form
    1,407,232,286.91/1,942,152,784.07 = 812,515,772.52/x
  3. Step 3: Cross multiply
    1,407,232,286.91x = 1,942,152,784.07 × 812,515,772.52
  4. Step 4: Simplify right side
    1,407,232,286.91x = 1,578,029,769,696,442,112
  5. Step 5: Solve for x
    x = 1,578,029,769,696,442,112/1,407,232,286.91
  6. Step 6: Final answer
    x = 1,121,371,208.13

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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.