Home / 630,219.60-945,943.80-315,032.40

Finding the Fourth Proportional to 630,219.60, 945,943.80 and 315,032.40

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Solution

The fourth proportional to 630,219.60, 945,943.80 and 315,032.40 is: 472,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,219.60 : 945,943.80 = 315,032.40 : x
  2. Step 2: Convert to fraction form
    630,219.60/945,943.80 = 315,032.40/x
  3. Step 3: Cross multiply
    630,219.60x = 945,943.80 × 315,032.40
  4. Step 4: Simplify right side
    630,219.60x = 298,002,945,579.12
  5. Step 5: Solve for x
    x = 298,002,945,579.12/630,219.60
  6. Step 6: Final answer
    x = 472,855.72

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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.