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Finding the Fourth Proportional to 630,579.60, 870,218.31 and 344,118.15

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Solution

The fourth proportional to 630,579.60, 870,218.31 and 344,118.15 is: 474,893.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,579.60 : 870,218.31 = 344,118.15 : x
  2. Step 2: Convert to fraction form
    630,579.60/870,218.31 = 344,118.15/x
  3. Step 3: Cross multiply
    630,579.60x = 870,218.31 × 344,118.15
  4. Step 4: Simplify right side
    630,579.60x = 299,457,914,933.33
  5. Step 5: Solve for x
    x = 299,457,914,933.33/630,579.60
  6. Step 6: Final answer
    x = 474,893.12

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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.