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Finding the Fourth Proportional to 515,475.59, 711,322.12 and 286,018.33

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Solution

The fourth proportional to 515,475.59, 711,322.12 and 286,018.33 is: 394,686.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,475.59 : 711,322.12 = 286,018.33 : x
  2. Step 2: Convert to fraction form
    515,475.59/711,322.12 = 286,018.33/x
  3. Step 3: Cross multiply
    515,475.59x = 711,322.12 × 286,018.33
  4. Step 4: Simplify right side
    515,475.59x = 203,451,164,854.46
  5. Step 5: Solve for x
    x = 203,451,164,854.46/515,475.59
  6. Step 6: Final answer
    x = 394,686.32

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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.