Home / 765,779.90-1,148,806.64-260,314.31

Finding the Fourth Proportional to 765,779.90, 1,148,806.64 and 260,314.31

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Solution

The fourth proportional to 765,779.90, 1,148,806.64 and 260,314.31 is: 390,517.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,779.90 : 1,148,806.64 = 260,314.31 : x
  2. Step 2: Convert to fraction form
    765,779.90/1,148,806.64 = 260,314.31/x
  3. Step 3: Cross multiply
    765,779.90x = 1,148,806.64 × 260,314.31
  4. Step 4: Simplify right side
    765,779.90x = 299,050,811,337.82
  5. Step 5: Solve for x
    x = 299,050,811,337.82/765,779.90
  6. Step 6: Final answer
    x = 390,517.97

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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.