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Finding the Fourth Proportional to 533,995.40, 736,910.96 and 288,979.98

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Solution

The fourth proportional to 533,995.40, 736,910.96 and 288,979.98 is: 398,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,995.40 : 736,910.96 = 288,979.98 : x
  2. Step 2: Convert to fraction form
    533,995.40/736,910.96 = 288,979.98/x
  3. Step 3: Cross multiply
    533,995.40x = 736,910.96 × 288,979.98
  4. Step 4: Simplify right side
    533,995.40x = 212,952,514,482.58
  5. Step 5: Solve for x
    x = 212,952,514,482.58/533,995.40
  6. Step 6: Final answer
    x = 398,790.92

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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.