Home / 551,538.08-761,039.68-309,774.36

Finding the Fourth Proportional to 551,538.08, 761,039.68 and 309,774.36

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Solution

The fourth proportional to 551,538.08, 761,039.68 and 309,774.36 is: 427,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,538.08 : 761,039.68 = 309,774.36 : x
  2. Step 2: Convert to fraction form
    551,538.08/761,039.68 = 309,774.36/x
  3. Step 3: Cross multiply
    551,538.08x = 761,039.68 × 309,774.36
  4. Step 4: Simplify right side
    551,538.08x = 235,750,579,806.61
  5. Step 5: Solve for x
    x = 235,750,579,806.61/551,538.08
  6. Step 6: Final answer
    x = 427,442.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.