Home / 719,031.15-1,078,545.36-419,301.55

Finding the Fourth Proportional to 719,031.15, 1,078,545.36 and 419,301.55

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Solution

The fourth proportional to 719,031.15, 1,078,545.36 and 419,301.55 is: 628,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,031.15 : 1,078,545.36 = 419,301.55 : x
  2. Step 2: Convert to fraction form
    719,031.15/1,078,545.36 = 419,301.55/x
  3. Step 3: Cross multiply
    719,031.15x = 1,078,545.36 × 419,301.55
  4. Step 4: Simplify right side
    719,031.15x = 452,235,742,007.50
  5. Step 5: Solve for x
    x = 452,235,742,007.50/719,031.15
  6. Step 6: Final answer
    x = 628,951.53

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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.