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Finding the Fourth Proportional to 535,779.72, 803,669.50 and 417,539.56

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Solution

The fourth proportional to 535,779.72, 803,669.50 and 417,539.56 is: 626,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,779.72 : 803,669.50 = 417,539.56 : x
  2. Step 2: Convert to fraction form
    535,779.72/803,669.50 = 417,539.56/x
  3. Step 3: Cross multiply
    535,779.72x = 803,669.50 × 417,539.56
  4. Step 4: Simplify right side
    535,779.72x = 335,563,809,415.42
  5. Step 5: Solve for x
    x = 335,563,809,415.42/535,779.72
  6. Step 6: Final answer
    x = 626,309.28

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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.