Home / 723,009.90-1,084,514.85-423,828.30

Finding the Fourth Proportional to 723,009.90, 1,084,514.85 and 423,828.30

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Solution

The fourth proportional to 723,009.90, 1,084,514.85 and 423,828.30 is: 635,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,009.90 : 1,084,514.85 = 423,828.30 : x
  2. Step 2: Convert to fraction form
    723,009.90/1,084,514.85 = 423,828.30/x
  3. Step 3: Cross multiply
    723,009.90x = 1,084,514.85 × 423,828.30
  4. Step 4: Simplify right side
    723,009.90x = 459,648,085,200.26
  5. Step 5: Solve for x
    x = 459,648,085,200.26/723,009.90
  6. Step 6: Final answer
    x = 635,742.45

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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.