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Finding the Fourth Proportional to 535,815.40, 804,644.70 and 379,143.40

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Solution

The fourth proportional to 535,815.40, 804,644.70 and 379,143.40 is: 569,367.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,815.40 : 804,644.70 = 379,143.40 : x
  2. Step 2: Convert to fraction form
    535,815.40/804,644.70 = 379,143.40/x
  3. Step 3: Cross multiply
    535,815.40x = 804,644.70 × 379,143.40
  4. Step 4: Simplify right side
    535,815.40x = 305,075,727,349.98
  5. Step 5: Solve for x
    x = 305,075,727,349.98/535,815.40
  6. Step 6: Final answer
    x = 569,367.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.