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Finding the Fourth Proportional to 571,703.94, 788,937.57 and 313,584.30

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Solution

The fourth proportional to 571,703.94, 788,937.57 and 313,584.30 is: 432,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,703.94 : 788,937.57 = 313,584.30 : x
  2. Step 2: Convert to fraction form
    571,703.94/788,937.57 = 313,584.30/x
  3. Step 3: Cross multiply
    571,703.94x = 788,937.57 × 313,584.30
  4. Step 4: Simplify right side
    571,703.94x = 247,398,435,632.15
  5. Step 5: Solve for x
    x = 247,398,435,632.15/571,703.94
  6. Step 6: Final answer
    x = 432,738.73

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Double scale
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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.