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Finding the Fourth Proportional to 718,718.96, 992,158.44 and 512,120.72

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Solution

The fourth proportional to 718,718.96, 992,158.44 and 512,120.72 is: 706,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,718.96 : 992,158.44 = 512,120.72 : x
  2. Step 2: Convert to fraction form
    718,718.96/992,158.44 = 512,120.72/x
  3. Step 3: Cross multiply
    718,718.96x = 992,158.44 × 512,120.72
  4. Step 4: Simplify right side
    718,718.96x = 508,104,894,646.88
  5. Step 5: Solve for x
    x = 508,104,894,646.88/718,718.96
  6. Step 6: Final answer
    x = 706,959.08

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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.