Home / 905,421.60-1,358,132.40-274,366.80

Finding the Fourth Proportional to 905,421.60, 1,358,132.40 and 274,366.80

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Solution

The fourth proportional to 905,421.60, 1,358,132.40 and 274,366.80 is: 411,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,421.60 : 1,358,132.40 = 274,366.80 : x
  2. Step 2: Convert to fraction form
    905,421.60/1,358,132.40 = 274,366.80/x
  3. Step 3: Cross multiply
    905,421.60x = 1,358,132.40 × 274,366.80
  4. Step 4: Simplify right side
    905,421.60x = 372,626,440,564.32
  5. Step 5: Solve for x
    x = 372,626,440,564.32/905,421.60
  6. Step 6: Final answer
    x = 411,550.20

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Double scale
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Similar ratio
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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.