Home / 698,776.23-964,345.38-392,948.85

Finding the Fourth Proportional to 698,776.23, 964,345.38 and 392,948.85

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Solution

The fourth proportional to 698,776.23, 964,345.38 and 392,948.85 is: 542,288.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,776.23 : 964,345.38 = 392,948.85 : x
  2. Step 2: Convert to fraction form
    698,776.23/964,345.38 = 392,948.85/x
  3. Step 3: Cross multiply
    698,776.23x = 964,345.38 × 392,948.85
  4. Step 4: Simplify right side
    698,776.23x = 378,938,408,073.81
  5. Step 5: Solve for x
    x = 378,938,408,073.81/698,776.23
  6. Step 6: Final answer
    x = 542,288.64

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Double scale
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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.