Home / 761,999.71-1,142,199.42-256,385.15

Finding the Fourth Proportional to 761,999.71, 1,142,199.42 and 256,385.15

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Solution

The fourth proportional to 761,999.71, 1,142,199.42 and 256,385.15 is: 384,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,999.71 : 1,142,199.42 = 256,385.15 : x
  2. Step 2: Convert to fraction form
    761,999.71/1,142,199.42 = 256,385.15/x
  3. Step 3: Cross multiply
    761,999.71x = 1,142,199.42 × 256,385.15
  4. Step 4: Simplify right side
    761,999.71x = 292,842,967,237.42
  5. Step 5: Solve for x
    x = 292,842,967,237.42/761,999.71
  6. Step 6: Final answer
    x = 384,308.50

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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.