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Finding the Fourth Proportional to 559,701.12, 772,406.88 and 317,993.76

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Solution

The fourth proportional to 559,701.12, 772,406.88 and 317,993.76 is: 438,842.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,701.12 : 772,406.88 = 317,993.76 : x
  2. Step 2: Convert to fraction form
    559,701.12/772,406.88 = 317,993.76/x
  3. Step 3: Cross multiply
    559,701.12x = 772,406.88 × 317,993.76
  4. Step 4: Simplify right side
    559,701.12x = 245,620,568,021.07
  5. Step 5: Solve for x
    x = 245,620,568,021.07/559,701.12
  6. Step 6: Final answer
    x = 438,842.37

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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.