Home / 751,503.40-1,128,129.90-452,321.80

Finding the Fourth Proportional to 751,503.40, 1,128,129.90 and 452,321.80

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Solution

The fourth proportional to 751,503.40, 1,128,129.90 and 452,321.80 is: 679,009.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,503.40 : 1,128,129.90 = 452,321.80 : x
  2. Step 2: Convert to fraction form
    751,503.40/1,128,129.90 = 452,321.80/x
  3. Step 3: Cross multiply
    751,503.40x = 1,128,129.90 × 452,321.80
  4. Step 4: Simplify right side
    751,503.40x = 510,277,747,001.82
  5. Step 5: Solve for x
    x = 510,277,747,001.82/751,503.40
  6. Step 6: Final answer
    x = 679,009.23

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Double scale
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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.