Home / 657,990.07-907,971.61-386,029.51

Finding the Fourth Proportional to 657,990.07, 907,971.61 and 386,029.51

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Solution

The fourth proportional to 657,990.07, 907,971.61 and 386,029.51 is: 532,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,990.07 : 907,971.61 = 386,029.51 : x
  2. Step 2: Convert to fraction form
    657,990.07/907,971.61 = 386,029.51/x
  3. Step 3: Cross multiply
    657,990.07x = 907,971.61 × 386,029.51
  4. Step 4: Simplify right side
    657,990.07x = 350,503,835,702.21
  5. Step 5: Solve for x
    x = 350,503,835,702.21/657,990.07
  6. Step 6: Final answer
    x = 532,688.64

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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.