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Finding the Fourth Proportional to 493,485.30, 740,573.55 and 316,422.90

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Solution

The fourth proportional to 493,485.30, 740,573.55 and 316,422.90 is: 474,855.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,485.30 : 740,573.55 = 316,422.90 : x
  2. Step 2: Convert to fraction form
    493,485.30/740,573.55 = 316,422.90/x
  3. Step 3: Cross multiply
    493,485.30x = 740,573.55 × 316,422.90
  4. Step 4: Simplify right side
    493,485.30x = 234,334,430,354.30
  5. Step 5: Solve for x
    x = 234,334,430,354.30/493,485.30
  6. Step 6: Final answer
    x = 474,855.95

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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.