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Finding the Fourth Proportional to 493,754.80, 740,632.20 and 434,657.20

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Solution

The fourth proportional to 493,754.80, 740,632.20 and 434,657.20 is: 651,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,754.80 : 740,632.20 = 434,657.20 : x
  2. Step 2: Convert to fraction form
    493,754.80/740,632.20 = 434,657.20/x
  3. Step 3: Cross multiply
    493,754.80x = 740,632.20 × 434,657.20
  4. Step 4: Simplify right side
    493,754.80x = 321,921,118,281.84
  5. Step 5: Solve for x
    x = 321,921,118,281.84/493,754.80
  6. Step 6: Final answer
    x = 651,985.80

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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.