Home / 929,099.70-1,280,800.49-656,686.98

Finding the Fourth Proportional to 929,099.70, 1,280,800.49 and 656,686.98

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Solution

The fourth proportional to 929,099.70, 1,280,800.49 and 656,686.98 is: 905,268.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,099.70 : 1,280,800.49 = 656,686.98 : x
  2. Step 2: Convert to fraction form
    929,099.70/1,280,800.49 = 656,686.98/x
  3. Step 3: Cross multiply
    929,099.70x = 1,280,800.49 × 656,686.98
  4. Step 4: Simplify right side
    929,099.70x = 841,085,002,477.19
  5. Step 5: Solve for x
    x = 841,085,002,477.19/929,099.70
  6. Step 6: Final answer
    x = 905,268.83

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.