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Finding the Fourth Proportional to 570,081.08, 786,728.22 and 315,455.96

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Solution

The fourth proportional to 570,081.08, 786,728.22 and 315,455.96 is: 435,338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,081.08 : 786,728.22 = 315,455.96 : x
  2. Step 2: Convert to fraction form
    570,081.08/786,728.22 = 315,455.96/x
  3. Step 3: Cross multiply
    570,081.08x = 786,728.22 × 315,455.96
  4. Step 4: Simplify right side
    570,081.08x = 248,178,105,899.19
  5. Step 5: Solve for x
    x = 248,178,105,899.19/570,081.08
  6. Step 6: Final answer
    x = 435,338.26

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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.