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Finding the Fourth Proportional to 547,095, 755,117.08 and 320,813.40

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Solution

The fourth proportional to 547,095, 755,117.08 and 320,813.40 is: 442,796.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,095 : 755,117.08 = 320,813.40 : x
  2. Step 2: Convert to fraction form
    547,095/755,117.08 = 320,813.40/x
  3. Step 3: Cross multiply
    547,095x = 755,117.08 × 320,813.40
  4. Step 4: Simplify right side
    547,095x = 242,251,677,832.87
  5. Step 5: Solve for x
    x = 242,251,677,832.87/547,095
  6. Step 6: Final answer
    x = 442,796.37

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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.