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Finding the Fourth Proportional to 458,510.20, 686,453.10 and 406,022.20

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Solution

The fourth proportional to 458,510.20, 686,453.10 and 406,022.20 is: 607,871.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,510.20 : 686,453.10 = 406,022.20 : x
  2. Step 2: Convert to fraction form
    458,510.20/686,453.10 = 406,022.20/x
  3. Step 3: Cross multiply
    458,510.20x = 686,453.10 × 406,022.20
  4. Step 4: Simplify right side
    458,510.20x = 278,715,197,858.82
  5. Step 5: Solve for x
    x = 278,715,197,858.82/458,510.20
  6. Step 6: Final answer
    x = 607,871.31

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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.