Home / 817,806.20-1,226,903.40-256,840.70

Finding the Fourth Proportional to 817,806.20, 1,226,903.40 and 256,840.70

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Solution

The fourth proportional to 817,806.20, 1,226,903.40 and 256,840.70 is: 385,322.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,806.20 : 1,226,903.40 = 256,840.70 : x
  2. Step 2: Convert to fraction form
    817,806.20/1,226,903.40 = 256,840.70/x
  3. Step 3: Cross multiply
    817,806.20x = 1,226,903.40 × 256,840.70
  4. Step 4: Simplify right side
    817,806.20x = 315,118,721,953.86
  5. Step 5: Solve for x
    x = 315,118,721,953.86/817,806.20
  6. Step 6: Final answer
    x = 385,322.00

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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.