Home / 912,686.20-1,369,223.70-281,663.80

Finding the Fourth Proportional to 912,686.20, 1,369,223.70 and 281,663.80

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Solution

The fourth proportional to 912,686.20, 1,369,223.70 and 281,663.80 is: 422,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,686.20 : 1,369,223.70 = 281,663.80 : x
  2. Step 2: Convert to fraction form
    912,686.20/1,369,223.70 = 281,663.80/x
  3. Step 3: Cross multiply
    912,686.20x = 1,369,223.70 × 281,663.80
  4. Step 4: Simplify right side
    912,686.20x = 385,660,750,392.06
  5. Step 5: Solve for x
    x = 385,660,750,392.06/912,686.20
  6. Step 6: Final answer
    x = 422,555.69

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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.