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Finding the Fourth Proportional to 630,692.24, 870,357.90 and 344,218.40

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Solution

The fourth proportional to 630,692.24, 870,357.90 and 344,218.40 is: 475,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,692.24 : 870,357.90 = 344,218.40 : x
  2. Step 2: Convert to fraction form
    630,692.24/870,357.90 = 344,218.40/x
  3. Step 3: Cross multiply
    630,692.24x = 870,357.90 × 344,218.40
  4. Step 4: Simplify right side
    630,692.24x = 299,593,203,765.36
  5. Step 5: Solve for x
    x = 299,593,203,765.36/630,692.24
  6. Step 6: Final answer
    x = 475,022.82

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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.