Home / 579,683.40-869,120.10-342,904.20

Finding the Fourth Proportional to 579,683.40, 869,120.10 and 342,904.20

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Solution

The fourth proportional to 579,683.40, 869,120.10 and 342,904.20 is: 514,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,683.40 : 869,120.10 = 342,904.20 : x
  2. Step 2: Convert to fraction form
    579,683.40/869,120.10 = 342,904.20/x
  3. Step 3: Cross multiply
    579,683.40x = 869,120.10 × 342,904.20
  4. Step 4: Simplify right side
    579,683.40x = 298,024,932,594.42
  5. Step 5: Solve for x
    x = 298,024,932,594.42/579,683.40
  6. Step 6: Final answer
    x = 514,116.73

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Double scale
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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.