Home / 727,412.73-1,003,828.89-421,666.19

Finding the Fourth Proportional to 727,412.73, 1,003,828.89 and 421,666.19

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Solution

The fourth proportional to 727,412.73, 1,003,828.89 and 421,666.19 is: 581,898.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,412.73 : 1,003,828.89 = 421,666.19 : x
  2. Step 2: Convert to fraction form
    727,412.73/1,003,828.89 = 421,666.19/x
  3. Step 3: Cross multiply
    727,412.73x = 1,003,828.89 × 421,666.19
  4. Step 4: Simplify right side
    727,412.73x = 423,280,698,439.09
  5. Step 5: Solve for x
    x = 423,280,698,439.09/727,412.73
  6. Step 6: Final answer
    x = 581,898.94

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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.