Home / 750,725.68-1,036,018.28-428,429.36

Finding the Fourth Proportional to 750,725.68, 1,036,018.28 and 428,429.36

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Solution

The fourth proportional to 750,725.68, 1,036,018.28 and 428,429.36 is: 591,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,725.68 : 1,036,018.28 = 428,429.36 : x
  2. Step 2: Convert to fraction form
    750,725.68/1,036,018.28 = 428,429.36/x
  3. Step 3: Cross multiply
    750,725.68x = 1,036,018.28 × 428,429.36
  4. Step 4: Simplify right side
    750,725.68x = 443,860,648,648.70
  5. Step 5: Solve for x
    x = 443,860,648,648.70/750,725.68
  6. Step 6: Final answer
    x = 591,242.13

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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.