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Finding the Fourth Proportional to 522,406.55, 785,280.23 and 485,427.35

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Solution

The fourth proportional to 522,406.55, 785,280.23 and 485,427.35 is: 729,693.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,406.55 : 785,280.23 = 485,427.35 : x
  2. Step 2: Convert to fraction form
    522,406.55/785,280.23 = 485,427.35/x
  3. Step 3: Cross multiply
    522,406.55x = 785,280.23 × 485,427.35
  4. Step 4: Simplify right side
    522,406.55x = 381,196,498,629.15
  5. Step 5: Solve for x
    x = 381,196,498,629.15/522,406.55
  6. Step 6: Final answer
    x = 729,693.18

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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.