Home / 630,631.50-945,159.96-315,178.62

Finding the Fourth Proportional to 630,631.50, 945,159.96 and 315,178.62

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Solution

The fourth proportional to 630,631.50, 945,159.96 and 315,178.62 is: 472,374.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,631.50 : 945,159.96 = 315,178.62 : x
  2. Step 2: Convert to fraction form
    630,631.50/945,159.96 = 315,178.62/x
  3. Step 3: Cross multiply
    630,631.50x = 945,159.96 × 315,178.62
  4. Step 4: Simplify right side
    630,631.50x = 297,894,211,872.06
  5. Step 5: Solve for x
    x = 297,894,211,872.06/630,631.50
  6. Step 6: Final answer
    x = 472,374.46

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Double scale
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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.