Home / 817,434.60-1,226,190.30-256,487.40

Finding the Fourth Proportional to 817,434.60, 1,226,190.30 and 256,487.40

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Solution

The fourth proportional to 817,434.60, 1,226,190.30 and 256,487.40 is: 384,743.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,434.60 : 1,226,190.30 = 256,487.40 : x
  2. Step 2: Convert to fraction form
    817,434.60/1,226,190.30 = 256,487.40/x
  3. Step 3: Cross multiply
    817,434.60x = 1,226,190.30 × 256,487.40
  4. Step 4: Simplify right side
    817,434.60x = 314,502,361,952.22
  5. Step 5: Solve for x
    x = 314,502,361,952.22/817,434.60
  6. Step 6: Final answer
    x = 384,743.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.