Home / 390,141,625.43-537,874,616.86-309,939,723.36

Finding the Fourth Proportional to 390,141,625.43, 537,874,616.86 and 309,939,723.36

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Solution

The fourth proportional to 390,141,625.43, 537,874,616.86 and 309,939,723.36 is: 427,303,058.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,141,625.43 : 537,874,616.86 = 309,939,723.36 : x
  2. Step 2: Convert to fraction form
    390,141,625.43/537,874,616.86 = 309,939,723.36/x
  3. Step 3: Cross multiply
    390,141,625.43x = 537,874,616.86 × 309,939,723.36
  4. Step 4: Simplify right side
    390,141,625.43x = 166,708,709,951,954,400
  5. Step 5: Solve for x
    x = 166,708,709,951,954,400/390,141,625.43
  6. Step 6: Final answer
    x = 427,303,058.90

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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.