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Finding the Fourth Proportional to 659,405.61, 910,018.11 and 369,014.72

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Solution

The fourth proportional to 659,405.61, 910,018.11 and 369,014.72 is: 509,261.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,405.61 : 910,018.11 = 369,014.72 : x
  2. Step 2: Convert to fraction form
    659,405.61/910,018.11 = 369,014.72/x
  3. Step 3: Cross multiply
    659,405.61x = 910,018.11 × 369,014.72
  4. Step 4: Simplify right side
    659,405.61x = 335,810,073,506.49
  5. Step 5: Solve for x
    x = 335,810,073,506.49/659,405.61
  6. Step 6: Final answer
    x = 509,261.78

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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.