Home / 745,789.08-1,117,682.44-408,320.40

Finding the Fourth Proportional to 745,789.08, 1,117,682.44 and 408,320.40

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Solution

The fourth proportional to 745,789.08, 1,117,682.44 and 408,320.40 is: 611,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,789.08 : 1,117,682.44 = 408,320.40 : x
  2. Step 2: Convert to fraction form
    745,789.08/1,117,682.44 = 408,320.40/x
  3. Step 3: Cross multiply
    745,789.08x = 1,117,682.44 × 408,320.40
  4. Step 4: Simplify right side
    745,789.08x = 456,372,540,973.78
  5. Step 5: Solve for x
    x = 456,372,540,973.78/745,789.08
  6. Step 6: Final answer
    x = 611,932.45

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Double scale
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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.