Home / 709,600.28-1,064,870.54-389,975.36

Finding the Fourth Proportional to 709,600.28, 1,064,870.54 and 389,975.36

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Solution

The fourth proportional to 709,600.28, 1,064,870.54 and 389,975.36 is: 585,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,600.28 : 1,064,870.54 = 389,975.36 : x
  2. Step 2: Convert to fraction form
    709,600.28/1,064,870.54 = 389,975.36/x
  3. Step 3: Cross multiply
    709,600.28x = 1,064,870.54 × 389,975.36
  4. Step 4: Simplify right side
    709,600.28x = 415,273,272,902.19
  5. Step 5: Solve for x
    x = 415,273,272,902.19/709,600.28
  6. Step 6: Final answer
    x = 585,221.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.