Home / 759,686.79-1,139,109.51-310,722.96

Finding the Fourth Proportional to 759,686.79, 1,139,109.51 and 310,722.96

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Solution

The fourth proportional to 759,686.79, 1,139,109.51 and 310,722.96 is: 465,912.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,686.79 : 1,139,109.51 = 310,722.96 : x
  2. Step 2: Convert to fraction form
    759,686.79/1,139,109.51 = 310,722.96/x
  3. Step 3: Cross multiply
    759,686.79x = 1,139,109.51 × 310,722.96
  4. Step 4: Simplify right side
    759,686.79x = 353,947,478,711.35
  5. Step 5: Solve for x
    x = 353,947,478,711.35/759,686.79
  6. Step 6: Final answer
    x = 465,912.38

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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.