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Finding the Fourth Proportional to 630,173.60, 945,874.80 and 314,986.40

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Solution

The fourth proportional to 630,173.60, 945,874.80 and 314,986.40 is: 472,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,173.60 : 945,874.80 = 314,986.40 : x
  2. Step 2: Convert to fraction form
    630,173.60/945,874.80 = 314,986.40/x
  3. Step 3: Cross multiply
    630,173.60x = 945,874.80 × 314,986.40
  4. Step 4: Simplify right side
    630,173.60x = 297,937,698,102.72
  5. Step 5: Solve for x
    x = 297,937,698,102.72/630,173.60
  6. Step 6: Final answer
    x = 472,786.70

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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.