Home / 685,749.66-946,328.31-383,948.70

Finding the Fourth Proportional to 685,749.66, 946,328.31 and 383,948.70

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Solution

The fourth proportional to 685,749.66, 946,328.31 and 383,948.70 is: 529,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,749.66 : 946,328.31 = 383,948.70 : x
  2. Step 2: Convert to fraction form
    685,749.66/946,328.31 = 383,948.70/x
  3. Step 3: Cross multiply
    685,749.66x = 946,328.31 × 383,948.70
  4. Step 4: Simplify right side
    685,749.66x = 363,341,524,397.70
  5. Step 5: Solve for x
    x = 363,341,524,397.70/685,749.66
  6. Step 6: Final answer
    x = 529,845.72

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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.