Home / 827,518.52-1,142,485.04-656,128.80

Finding the Fourth Proportional to 827,518.52, 1,142,485.04 and 656,128.80

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Solution

The fourth proportional to 827,518.52, 1,142,485.04 and 656,128.80 is: 905,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,518.52 : 1,142,485.04 = 656,128.80 : x
  2. Step 2: Convert to fraction form
    827,518.52/1,142,485.04 = 656,128.80/x
  3. Step 3: Cross multiply
    827,518.52x = 1,142,485.04 × 656,128.80
  4. Step 4: Simplify right side
    827,518.52x = 749,617,340,876.19
  5. Step 5: Solve for x
    x = 749,617,340,876.19/827,518.52
  6. Step 6: Final answer
    x = 905,861.71

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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.