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Finding the Fourth Proportional to 488,116.30, 732,830.55 and 311,406.70

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Solution

The fourth proportional to 488,116.30, 732,830.55 and 311,406.70 is: 467,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,116.30 : 732,830.55 = 311,406.70 : x
  2. Step 2: Convert to fraction form
    488,116.30/732,830.55 = 311,406.70/x
  3. Step 3: Cross multiply
    488,116.30x = 732,830.55 × 311,406.70
  4. Step 4: Simplify right side
    488,116.30x = 228,208,343,234.69
  5. Step 5: Solve for x
    x = 228,208,343,234.69/488,116.30
  6. Step 6: Final answer
    x = 467,528.63

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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.