Home / 770,838.29-1,155,859.05-338,378.76

Finding the Fourth Proportional to 770,838.29, 1,155,859.05 and 338,378.76

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Solution

The fourth proportional to 770,838.29, 1,155,859.05 and 338,378.76 is: 507,393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,838.29 : 1,155,859.05 = 338,378.76 : x
  2. Step 2: Convert to fraction form
    770,838.29/1,155,859.05 = 338,378.76/x
  3. Step 3: Cross multiply
    770,838.29x = 1,155,859.05 × 338,378.76
  4. Step 4: Simplify right side
    770,838.29x = 391,118,147,739.31
  5. Step 5: Solve for x
    x = 391,118,147,739.31/770,838.29
  6. Step 6: Final answer
    x = 507,393.25

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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.