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Finding the Fourth Proportional to 490,328.47, 736,599.93 and 290,779.76

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Solution

The fourth proportional to 490,328.47, 736,599.93 and 290,779.76 is: 436,826.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,328.47 : 736,599.93 = 290,779.76 : x
  2. Step 2: Convert to fraction form
    490,328.47/736,599.93 = 290,779.76/x
  3. Step 3: Cross multiply
    490,328.47x = 736,599.93 × 290,779.76
  4. Step 4: Simplify right side
    490,328.47x = 214,188,350,861.42
  5. Step 5: Solve for x
    x = 214,188,350,861.42/490,328.47
  6. Step 6: Final answer
    x = 436,826.26

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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.