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Finding the Fourth Proportional to 504,406.72, 696,082.80 and 278,047.36

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Solution

The fourth proportional to 504,406.72, 696,082.80 and 278,047.36 is: 383,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,406.72 : 696,082.80 = 278,047.36 : x
  2. Step 2: Convert to fraction form
    504,406.72/696,082.80 = 278,047.36/x
  3. Step 3: Cross multiply
    504,406.72x = 696,082.80 × 278,047.36
  4. Step 4: Simplify right side
    504,406.72x = 193,543,984,881.41
  5. Step 5: Solve for x
    x = 193,543,984,881.41/504,406.72
  6. Step 6: Final answer
    x = 383,706.20

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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.