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Finding the Fourth Proportional to 564,647.20, 779,214.45 and 310,014.79

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Solution

The fourth proportional to 564,647.20, 779,214.45 and 310,014.79 is: 427,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,647.20 : 779,214.45 = 310,014.79 : x
  2. Step 2: Convert to fraction form
    564,647.20/779,214.45 = 310,014.79/x
  3. Step 3: Cross multiply
    564,647.20x = 779,214.45 × 310,014.79
  4. Step 4: Simplify right side
    564,647.20x = 241,568,004,081.72
  5. Step 5: Solve for x
    x = 241,568,004,081.72/564,647.20
  6. Step 6: Final answer
    x = 427,821.13

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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.