Home / 791,128.51-1,091,762.56-428,552.36

Finding the Fourth Proportional to 791,128.51, 1,091,762.56 and 428,552.36

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Solution

The fourth proportional to 791,128.51, 1,091,762.56 and 428,552.36 is: 591,405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,128.51 : 1,091,762.56 = 428,552.36 : x
  2. Step 2: Convert to fraction form
    791,128.51/1,091,762.56 = 428,552.36/x
  3. Step 3: Cross multiply
    791,128.51x = 1,091,762.56 × 428,552.36
  4. Step 4: Simplify right side
    791,128.51x = 467,877,421,647.64
  5. Step 5: Solve for x
    x = 467,877,421,647.64/791,128.51
  6. Step 6: Final answer
    x = 591,405.08

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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.