Home / 632,689.22-872,784.14-428,670.34

Finding the Fourth Proportional to 632,689.22, 872,784.14 and 428,670.34

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Solution

The fourth proportional to 632,689.22, 872,784.14 and 428,670.34 is: 591,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,689.22 : 872,784.14 = 428,670.34 : x
  2. Step 2: Convert to fraction form
    632,689.22/872,784.14 = 428,670.34/x
  3. Step 3: Cross multiply
    632,689.22x = 872,784.14 × 428,670.34
  4. Step 4: Simplify right side
    632,689.22x = 374,136,674,040.41
  5. Step 5: Solve for x
    x = 374,136,674,040.41/632,689.22
  6. Step 6: Final answer
    x = 591,343.53

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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.