Home / 718,719.96-992,159.82-512,121.72

Finding the Fourth Proportional to 718,719.96, 992,159.82 and 512,121.72

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Solution

The fourth proportional to 718,719.96, 992,159.82 and 512,121.72 is: 706,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,719.96 : 992,159.82 = 512,121.72 : x
  2. Step 2: Convert to fraction form
    718,719.96/992,159.82 = 512,121.72/x
  3. Step 3: Cross multiply
    718,719.96x = 992,159.82 × 512,121.72
  4. Step 4: Simplify right side
    718,719.96x = 508,106,593,533.29
  5. Step 5: Solve for x
    x = 508,106,593,533.29/718,719.96
  6. Step 6: Final answer
    x = 706,960.46

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1.5x scale

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.