Home / 690,071.36-952,288.20-384,147.18

Finding the Fourth Proportional to 690,071.36, 952,288.20 and 384,147.18

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Solution

The fourth proportional to 690,071.36, 952,288.20 and 384,147.18 is: 530,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,071.36 : 952,288.20 = 384,147.18 : x
  2. Step 2: Convert to fraction form
    690,071.36/952,288.20 = 384,147.18/x
  3. Step 3: Cross multiply
    690,071.36x = 952,288.20 × 384,147.18
  4. Step 4: Simplify right side
    690,071.36x = 365,818,826,577.28
  5. Step 5: Solve for x
    x = 365,818,826,577.28/690,071.36
  6. Step 6: Final answer
    x = 530,117.39

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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.