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Finding the Fourth Proportional to 630,860.19, 870,582.49 and 344,380.20

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Solution

The fourth proportional to 630,860.19, 870,582.49 and 344,380.20 is: 475,242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,860.19 : 870,582.49 = 344,380.20 : x
  2. Step 2: Convert to fraction form
    630,860.19/870,582.49 = 344,380.20/x
  3. Step 3: Cross multiply
    630,860.19x = 870,582.49 × 344,380.20
  4. Step 4: Simplify right side
    630,860.19x = 299,811,372,022.70
  5. Step 5: Solve for x
    x = 299,811,372,022.70/630,860.19
  6. Step 6: Final answer
    x = 475,242.18

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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.