Home / 817,886.60-1,226,868.30-256,939.40

Finding the Fourth Proportional to 817,886.60, 1,226,868.30 and 256,939.40

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Solution

The fourth proportional to 817,886.60, 1,226,868.30 and 256,939.40 is: 385,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,886.60 : 1,226,868.30 = 256,939.40 : x
  2. Step 2: Convert to fraction form
    817,886.60/1,226,868.30 = 256,939.40/x
  3. Step 3: Cross multiply
    817,886.60x = 1,226,868.30 × 256,939.40
  4. Step 4: Simplify right side
    817,886.60x = 315,230,804,881.02
  5. Step 5: Solve for x
    x = 315,230,804,881.02/817,886.60
  6. Step 6: Final answer
    x = 385,421.16

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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.