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Finding the Fourth Proportional to 511,146.82, 705,502.81 and 317,700.63

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Solution

The fourth proportional to 511,146.82, 705,502.81 and 317,700.63 is: 438,501.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,146.82 : 705,502.81 = 317,700.63 : x
  2. Step 2: Convert to fraction form
    511,146.82/705,502.81 = 317,700.63/x
  3. Step 3: Cross multiply
    511,146.82x = 705,502.81 × 317,700.63
  4. Step 4: Simplify right side
    511,146.82x = 224,138,687,203.77
  5. Step 5: Solve for x
    x = 224,138,687,203.77/511,146.82
  6. Step 6: Final answer
    x = 438,501.58

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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.