Home / 765,203.83-1,055,990.10-438,510.37

Finding the Fourth Proportional to 765,203.83, 1,055,990.10 and 438,510.37

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Solution

The fourth proportional to 765,203.83, 1,055,990.10 and 438,510.37 is: 605,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,203.83 : 1,055,990.10 = 438,510.37 : x
  2. Step 2: Convert to fraction form
    765,203.83/1,055,990.10 = 438,510.37/x
  3. Step 3: Cross multiply
    765,203.83x = 1,055,990.10 × 438,510.37
  4. Step 4: Simplify right side
    765,203.83x = 463,062,609,467.34
  5. Step 5: Solve for x
    x = 463,062,609,467.34/765,203.83
  6. Step 6: Final answer
    x = 605,149.36

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Double scale
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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.