Home / 630,105.64-869,054.34-403,772.20

Finding the Fourth Proportional to 630,105.64, 869,054.34 and 403,772.20

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Solution

The fourth proportional to 630,105.64, 869,054.34 and 403,772.20 is: 556,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,105.64 : 869,054.34 = 403,772.20 : x
  2. Step 2: Convert to fraction form
    630,105.64/869,054.34 = 403,772.20/x
  3. Step 3: Cross multiply
    630,105.64x = 869,054.34 × 403,772.20
  4. Step 4: Simplify right side
    630,105.64x = 350,899,982,781.35
  5. Step 5: Solve for x
    x = 350,899,982,781.35/630,105.64
  6. Step 6: Final answer
    x = 556,890.72

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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.