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Finding the Fourth Proportional to 535,715.36, 739,785.12 and 345,056.48

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Solution

The fourth proportional to 535,715.36, 739,785.12 and 345,056.48 is: 476,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,715.36 : 739,785.12 = 345,056.48 : x
  2. Step 2: Convert to fraction form
    535,715.36/739,785.12 = 345,056.48/x
  3. Step 3: Cross multiply
    535,715.36x = 739,785.12 × 345,056.48
  4. Step 4: Simplify right side
    535,715.36x = 255,267,649,463.58
  5. Step 5: Solve for x
    x = 255,267,649,463.58/535,715.36
  6. Step 6: Final answer
    x = 476,498.66

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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.