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Finding the Fourth Proportional to 507,626.64, 700,509.60 and 278,181.18

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Solution

The fourth proportional to 507,626.64, 700,509.60 and 278,181.18 is: 383,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,626.64 : 700,509.60 = 278,181.18 : x
  2. Step 2: Convert to fraction form
    507,626.64/700,509.60 = 278,181.18/x
  3. Step 3: Cross multiply
    507,626.64x = 700,509.60 × 278,181.18
  4. Step 4: Simplify right side
    507,626.64x = 194,868,587,129.33
  5. Step 5: Solve for x
    x = 194,868,587,129.33/507,626.64
  6. Step 6: Final answer
    x = 383,881.72

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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.