Home / 881,288.16-1,216,174.68-499,387.74

Finding the Fourth Proportional to 881,288.16, 1,216,174.68 and 499,387.74

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Solution

The fourth proportional to 881,288.16, 1,216,174.68 and 499,387.74 is: 689,153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,288.16 : 1,216,174.68 = 499,387.74 : x
  2. Step 2: Convert to fraction form
    881,288.16/1,216,174.68 = 499,387.74/x
  3. Step 3: Cross multiply
    881,288.16x = 1,216,174.68 × 499,387.74
  4. Step 4: Simplify right side
    881,288.16x = 607,342,724,890.42
  5. Step 5: Solve for x
    x = 607,342,724,890.42/881,288.16
  6. Step 6: Final answer
    x = 689,153.39

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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.