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Finding the Fourth Proportional to 511,330.80, 767,341.80 and 286,690.80

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Solution

The fourth proportional to 511,330.80, 767,341.80 and 286,690.80 is: 430,229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,330.80 : 767,341.80 = 286,690.80 : x
  2. Step 2: Convert to fraction form
    511,330.80/767,341.80 = 286,690.80/x
  3. Step 3: Cross multiply
    511,330.80x = 767,341.80 × 286,690.80
  4. Step 4: Simplify right side
    511,330.80x = 219,989,834,515.44
  5. Step 5: Solve for x
    x = 219,989,834,515.44/511,330.80
  6. Step 6: Final answer
    x = 430,229.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.