Home / 912,962,175.20-1,259,781,512.78-511,097,929.42

Finding the Fourth Proportional to 912,962,175.20, 1,259,781,512.78 and 511,097,929.42

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Solution

The fourth proportional to 912,962,175.20, 1,259,781,512.78 and 511,097,929.42 is: 705,255,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,962,175.20 : 1,259,781,512.78 = 511,097,929.42 : x
  2. Step 2: Convert to fraction form
    912,962,175.20/1,259,781,512.78 = 511,097,929.42/x
  3. Step 3: Cross multiply
    912,962,175.20x = 1,259,781,512.78 × 511,097,929.42
  4. Step 4: Simplify right side
    912,962,175.20x = 643,871,722,703,453,312
  5. Step 5: Solve for x
    x = 643,871,722,703,453,312/912,962,175.20
  6. Step 6: Final answer
    x = 705,255,639.49

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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.