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Finding the Fourth Proportional to 661,427.68, 912,768.96 and 359,620.96

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Solution

The fourth proportional to 661,427.68, 912,768.96 and 359,620.96 is: 496,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,427.68 : 912,768.96 = 359,620.96 : x
  2. Step 2: Convert to fraction form
    661,427.68/912,768.96 = 359,620.96/x
  3. Step 3: Cross multiply
    661,427.68x = 912,768.96 × 359,620.96
  4. Step 4: Simplify right side
    661,427.68x = 328,250,849,653.40
  5. Step 5: Solve for x
    x = 328,250,849,653.40/661,427.68
  6. Step 6: Final answer
    x = 496,276.25

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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.