Home / 858,945.76-1,288,156.16-409,429.80

Finding the Fourth Proportional to 858,945.76, 1,288,156.16 and 409,429.80

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Solution

The fourth proportional to 858,945.76, 1,288,156.16 and 409,429.80 is: 614,019.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,945.76 : 1,288,156.16 = 409,429.80 : x
  2. Step 2: Convert to fraction form
    858,945.76/1,288,156.16 = 409,429.80/x
  3. Step 3: Cross multiply
    858,945.76x = 1,288,156.16 × 409,429.80
  4. Step 4: Simplify right side
    858,945.76x = 527,409,518,957.57
  5. Step 5: Solve for x
    x = 527,409,518,957.57/858,945.76
  6. Step 6: Final answer
    x = 614,019.58

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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.