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Finding the Fourth Proportional to 458,303.40, 687,455.10 and 452,082.60

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Solution

The fourth proportional to 458,303.40, 687,455.10 and 452,082.60 is: 678,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,303.40 : 687,455.10 = 452,082.60 : x
  2. Step 2: Convert to fraction form
    458,303.40/687,455.10 = 452,082.60/x
  3. Step 3: Cross multiply
    458,303.40x = 687,455.10 × 452,082.60
  4. Step 4: Simplify right side
    458,303.40x = 310,786,488,991.26
  5. Step 5: Solve for x
    x = 310,786,488,991.26/458,303.40
  6. Step 6: Final answer
    x = 678,123.90

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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.