Home / 709,722.71-976,931.38-618,918.47

Finding the Fourth Proportional to 709,722.71, 976,931.38 and 618,918.47

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Solution

The fourth proportional to 709,722.71, 976,931.38 and 618,918.47 is: 851,939.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,722.71 : 976,931.38 = 618,918.47 : x
  2. Step 2: Convert to fraction form
    709,722.71/976,931.38 = 618,918.47/x
  3. Step 3: Cross multiply
    709,722.71x = 976,931.38 × 618,918.47
  4. Step 4: Simplify right side
    709,722.71x = 604,640,871,910.00
  5. Step 5: Solve for x
    x = 604,640,871,910.00/709,722.71
  6. Step 6: Final answer
    x = 851,939.59

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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.