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Finding the Fourth Proportional to 659,705.47, 910,479.30 and 369,427.56

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Solution

The fourth proportional to 659,705.47, 910,479.30 and 369,427.56 is: 509,858.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,705.47 : 910,479.30 = 369,427.56 : x
  2. Step 2: Convert to fraction form
    659,705.47/910,479.30 = 369,427.56/x
  3. Step 3: Cross multiply
    659,705.47x = 910,479.30 × 369,427.56
  4. Step 4: Simplify right side
    659,705.47x = 336,356,140,753.54
  5. Step 5: Solve for x
    x = 336,356,140,753.54/659,705.47
  6. Step 6: Final answer
    x = 509,858.05

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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.