Home / 1,418,085,135.89-2,126,756,427.85-421,837,743.52

Finding the Fourth Proportional to 1,418,085,135.89, 2,126,756,427.85 and 421,837,743.52

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Solution

The fourth proportional to 1,418,085,135.89, 2,126,756,427.85 and 421,837,743.52 is: 632,646,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,085,135.89 : 2,126,756,427.85 = 421,837,743.52 : x
  2. Step 2: Convert to fraction form
    1,418,085,135.89/2,126,756,427.85 = 421,837,743.52/x
  3. Step 3: Cross multiply
    1,418,085,135.89x = 2,126,756,427.85 × 421,837,743.52
  4. Step 4: Simplify right side
    1,418,085,135.89x = 897,146,132,540,899,584
  5. Step 5: Solve for x
    x = 897,146,132,540,899,584/1,418,085,135.89
  6. Step 6: Final answer
    x = 632,646,171.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.