Home / 853,840.15-1,282,236.45-455,259.40

Finding the Fourth Proportional to 853,840.15, 1,282,236.45 and 455,259.40

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Solution

The fourth proportional to 853,840.15, 1,282,236.45 and 455,259.40 is: 683,676.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,840.15 : 1,282,236.45 = 455,259.40 : x
  2. Step 2: Convert to fraction form
    853,840.15/1,282,236.45 = 455,259.40/x
  3. Step 3: Cross multiply
    853,840.15x = 1,282,236.45 × 455,259.40
  4. Step 4: Simplify right side
    853,840.15x = 583,750,196,885.13
  5. Step 5: Solve for x
    x = 583,750,196,885.13/853,840.15
  6. Step 6: Final answer
    x = 683,676.21

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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.