Home / 727,412.04-1,003,859.70-405,122.07

Finding the Fourth Proportional to 727,412.04, 1,003,859.70 and 405,122.07

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Solution

The fourth proportional to 727,412.04, 1,003,859.70 and 405,122.07 is: 559,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,412.04 : 1,003,859.70 = 405,122.07 : x
  2. Step 2: Convert to fraction form
    727,412.04/1,003,859.70 = 405,122.07/x
  3. Step 3: Cross multiply
    727,412.04x = 1,003,859.70 × 405,122.07
  4. Step 4: Simplify right side
    727,412.04x = 406,685,719,653.58
  5. Step 5: Solve for x
    x = 406,685,719,653.58/727,412.04
  6. Step 6: Final answer
    x = 559,085.77

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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.