Home / 727,322.69-1,003,641.03-421,301.25

Finding the Fourth Proportional to 727,322.69, 1,003,641.03 and 421,301.25

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Solution

The fourth proportional to 727,322.69, 1,003,641.03 and 421,301.25 is: 581,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,322.69 : 1,003,641.03 = 421,301.25 : x
  2. Step 2: Convert to fraction form
    727,322.69/1,003,641.03 = 421,301.25/x
  3. Step 3: Cross multiply
    727,322.69x = 1,003,641.03 × 421,301.25
  4. Step 4: Simplify right side
    727,322.69x = 422,835,220,490.29
  5. Step 5: Solve for x
    x = 422,835,220,490.29/727,322.69
  6. Step 6: Final answer
    x = 581,358.49

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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.