Home / 516,552,965.19-712,836,284.27-290,491,881.81

Finding the Fourth Proportional to 516,552,965.19, 712,836,284.27 and 290,491,881.81

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Solution

The fourth proportional to 516,552,965.19, 712,836,284.27 and 290,491,881.81 is: 400,874,968.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,552,965.19 : 712,836,284.27 = 290,491,881.81 : x
  2. Step 2: Convert to fraction form
    516,552,965.19/712,836,284.27 = 290,491,881.81/x
  3. Step 3: Cross multiply
    516,552,965.19x = 712,836,284.27 × 290,491,881.81
  4. Step 4: Simplify right side
    516,552,965.19x = 207,073,153,638,587,936
  5. Step 5: Solve for x
    x = 207,073,153,638,587,936/516,552,965.19
  6. Step 6: Final answer
    x = 400,874,968.48

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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.