Home / 837,134.10-1,155,231.45-455,170.50

Finding the Fourth Proportional to 837,134.10, 1,155,231.45 and 455,170.50

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Solution

The fourth proportional to 837,134.10, 1,155,231.45 and 455,170.50 is: 628,127.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,134.10 : 1,155,231.45 = 455,170.50 : x
  2. Step 2: Convert to fraction form
    837,134.10/1,155,231.45 = 455,170.50/x
  3. Step 3: Cross multiply
    837,134.10x = 1,155,231.45 × 455,170.50
  4. Step 4: Simplify right side
    837,134.10x = 525,827,276,712.23
  5. Step 5: Solve for x
    x = 525,827,276,712.23/837,134.10
  6. Step 6: Final answer
    x = 628,127.89

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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.