Home / 710,420.40-1,065,760.20-289,738.80

Finding the Fourth Proportional to 710,420.40, 1,065,760.20 and 289,738.80

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Solution

The fourth proportional to 710,420.40, 1,065,760.20 and 289,738.80 is: 434,661.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,420.40 : 1,065,760.20 = 289,738.80 : x
  2. Step 2: Convert to fraction form
    710,420.40/1,065,760.20 = 289,738.80/x
  3. Step 3: Cross multiply
    710,420.40x = 1,065,760.20 × 289,738.80
  4. Step 4: Simplify right side
    710,420.40x = 308,792,081,435.76
  5. Step 5: Solve for x
    x = 308,792,081,435.76/710,420.40
  6. Step 6: Final answer
    x = 434,661.06

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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.