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Finding the Fourth Proportional to 525,672.24, 725,386.77 and 321,638.51

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Solution

The fourth proportional to 525,672.24, 725,386.77 and 321,638.51 is: 443,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,672.24 : 725,386.77 = 321,638.51 : x
  2. Step 2: Convert to fraction form
    525,672.24/725,386.77 = 321,638.51/x
  3. Step 3: Cross multiply
    525,672.24x = 725,386.77 × 321,638.51
  4. Step 4: Simplify right side
    525,672.24x = 233,312,316,249.58
  5. Step 5: Solve for x
    x = 233,312,316,249.58/525,672.24
  6. Step 6: Final answer
    x = 443,836.10

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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.