Home / 786,353.76-1,085,162.40-464,064.48

Finding the Fourth Proportional to 786,353.76, 1,085,162.40 and 464,064.48

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Solution

The fourth proportional to 786,353.76, 1,085,162.40 and 464,064.48 is: 640,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,353.76 : 1,085,162.40 = 464,064.48 : x
  2. Step 2: Convert to fraction form
    786,353.76/1,085,162.40 = 464,064.48/x
  3. Step 3: Cross multiply
    786,353.76x = 1,085,162.40 × 464,064.48
  4. Step 4: Simplify right side
    786,353.76x = 503,585,324,871.55
  5. Step 5: Solve for x
    x = 503,585,324,871.55/786,353.76
  6. Step 6: Final answer
    x = 640,405.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.