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Finding the Fourth Proportional to 517,330.35, 780,854.96 and 517,330.35

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Solution

The fourth proportional to 517,330.35, 780,854.96 and 517,330.35 is: 780,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,330.35 : 780,854.96 = 517,330.35 : x
  2. Step 2: Convert to fraction form
    517,330.35/780,854.96 = 517,330.35/x
  3. Step 3: Cross multiply
    517,330.35x = 780,854.96 × 517,330.35
  4. Step 4: Simplify right side
    517,330.35x = 403,959,969,756.04
  5. Step 5: Solve for x
    x = 403,959,969,756.04/517,330.35
  6. Step 6: Final answer
    x = 780,854.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.