Home / 1,185,621.90-1,636,190.10-720,317.40

Finding the Fourth Proportional to 1,185,621.90, 1,636,190.10 and 720,317.40

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Solution

The fourth proportional to 1,185,621.90, 1,636,190.10 and 720,317.40 is: 994,057.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,621.90 : 1,636,190.10 = 720,317.40 : x
  2. Step 2: Convert to fraction form
    1,185,621.90/1,636,190.10 = 720,317.40/x
  3. Step 3: Cross multiply
    1,185,621.90x = 1,636,190.10 × 720,317.40
  4. Step 4: Simplify right side
    1,185,621.90x = 1,178,576,198,737.74
  5. Step 5: Solve for x
    x = 1,178,576,198,737.74/1,185,621.90
  6. Step 6: Final answer
    x = 994,057.38

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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.