Home / 423,150,854.37-634,436,513.74-215,487,287.43

Finding the Fourth Proportional to 423,150,854.37, 634,436,513.74 and 215,487,287.43

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Solution

The fourth proportional to 423,150,854.37, 634,436,513.74 and 215,487,287.43 is: 323,083,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,150,854.37 : 634,436,513.74 = 215,487,287.43 : x
  2. Step 2: Convert to fraction form
    423,150,854.37/634,436,513.74 = 215,487,287.43/x
  3. Step 3: Cross multiply
    423,150,854.37x = 634,436,513.74 × 215,487,287.43
  4. Step 4: Simplify right side
    423,150,854.37x = 136,713,003,392,378,528
  5. Step 5: Solve for x
    x = 136,713,003,392,378,528/423,150,854.37
  6. Step 6: Final answer
    x = 323,083,368.45

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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.