Home / 770,138.80-1,154,430.60-349,716.40

Finding the Fourth Proportional to 770,138.80, 1,154,430.60 and 349,716.40

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Solution

The fourth proportional to 770,138.80, 1,154,430.60 and 349,716.40 is: 524,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,138.80 : 1,154,430.60 = 349,716.40 : x
  2. Step 2: Convert to fraction form
    770,138.80/1,154,430.60 = 349,716.40/x
  3. Step 3: Cross multiply
    770,138.80x = 1,154,430.60 × 349,716.40
  4. Step 4: Simplify right side
    770,138.80x = 403,723,313,481.84
  5. Step 5: Solve for x
    x = 403,723,313,481.84/770,138.80
  6. Step 6: Final answer
    x = 524,221.50

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1.5x scale

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.