Home / 770,555.20-1,155,811.20-349,830.40

Finding the Fourth Proportional to 770,555.20, 1,155,811.20 and 349,830.40

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Solution

The fourth proportional to 770,555.20, 1,155,811.20 and 349,830.40 is: 524,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,555.20 : 1,155,811.20 = 349,830.40 : x
  2. Step 2: Convert to fraction form
    770,555.20/1,155,811.20 = 349,830.40/x
  3. Step 3: Cross multiply
    770,555.20x = 1,155,811.20 × 349,830.40
  4. Step 4: Simplify right side
    770,555.20x = 404,337,894,420.48
  5. Step 5: Solve for x
    x = 404,337,894,420.48/770,555.20
  6. Step 6: Final answer
    x = 524,735.79

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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.