Home / 831,465.40-1,247,198.10-514,895.80

Finding the Fourth Proportional to 831,465.40, 1,247,198.10 and 514,895.80

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Solution

The fourth proportional to 831,465.40, 1,247,198.10 and 514,895.80 is: 772,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,465.40 : 1,247,198.10 = 514,895.80 : x
  2. Step 2: Convert to fraction form
    831,465.40/1,247,198.10 = 514,895.80/x
  3. Step 3: Cross multiply
    831,465.40x = 1,247,198.10 × 514,895.80
  4. Step 4: Simplify right side
    831,465.40x = 642,177,063,457.98
  5. Step 5: Solve for x
    x = 642,177,063,457.98/831,465.40
  6. Step 6: Final answer
    x = 772,343.70

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Double scale
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Similar ratio
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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.