Home / 459,743.70-689,615.55-127,319.70

Finding the Fourth Proportional to 459,743.70, 689,615.55 and 127,319.70

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Solution

The fourth proportional to 459,743.70, 689,615.55 and 127,319.70 is: 190,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,743.70 : 689,615.55 = 127,319.70 : x
  2. Step 2: Convert to fraction form
    459,743.70/689,615.55 = 127,319.70/x
  3. Step 3: Cross multiply
    459,743.70x = 689,615.55 × 127,319.70
  4. Step 4: Simplify right side
    459,743.70x = 87,801,644,941.34
  5. Step 5: Solve for x
    x = 87,801,644,941.34/459,743.70
  6. Step 6: Final answer
    x = 190,979.55

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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.