Home / 1,189,497.10-1,641,462-645,621.20

Finding the Fourth Proportional to 1,189,497.10, 1,641,462 and 645,621.20

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Solution

The fourth proportional to 1,189,497.10, 1,641,462 and 645,621.20 is: 890,933.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,497.10 : 1,641,462 = 645,621.20 : x
  2. Step 2: Convert to fraction form
    1,189,497.10/1,641,462 = 645,621.20/x
  3. Step 3: Cross multiply
    1,189,497.10x = 1,641,462 × 645,621.20
  4. Step 4: Simplify right side
    1,189,497.10x = 1,059,762,666,194.40
  5. Step 5: Solve for x
    x = 1,059,762,666,194.40/1,189,497.10
  6. Step 6: Final answer
    x = 890,933.38

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Double scale
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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.