Home / 719,136.10-1,079,006.55-386,323.30

Finding the Fourth Proportional to 719,136.10, 1,079,006.55 and 386,323.30

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Solution

The fourth proportional to 719,136.10, 1,079,006.55 and 386,323.30 is: 579,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,136.10 : 1,079,006.55 = 386,323.30 : x
  2. Step 2: Convert to fraction form
    719,136.10/1,079,006.55 = 386,323.30/x
  3. Step 3: Cross multiply
    719,136.10x = 1,079,006.55 × 386,323.30
  4. Step 4: Simplify right side
    719,136.10x = 416,845,371,117.62
  5. Step 5: Solve for x
    x = 416,845,371,117.62/719,136.10
  6. Step 6: Final answer
    x = 579,647.40

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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.