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Finding the Fourth Proportional to 630,175.60, 945,877.80 and 314,988.40

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Solution

The fourth proportional to 630,175.60, 945,877.80 and 314,988.40 is: 472,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,175.60 : 945,877.80 = 314,988.40 : x
  2. Step 2: Convert to fraction form
    630,175.60/945,877.80 = 314,988.40/x
  3. Step 3: Cross multiply
    630,175.60x = 945,877.80 × 314,988.40
  4. Step 4: Simplify right side
    630,175.60x = 297,940,534,817.52
  5. Step 5: Solve for x
    x = 297,940,534,817.52/630,175.60
  6. Step 6: Final answer
    x = 472,789.70

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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.