Home / 551,538.09-761,039.68-309,774.35

Finding the Fourth Proportional to 551,538.09, 761,039.68 and 309,774.35

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Solution

The fourth proportional to 551,538.09, 761,039.68 and 309,774.35 is: 427,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,538.09 : 761,039.68 = 309,774.35 : x
  2. Step 2: Convert to fraction form
    551,538.09/761,039.68 = 309,774.35/x
  3. Step 3: Cross multiply
    551,538.09x = 761,039.68 × 309,774.35
  4. Step 4: Simplify right side
    551,538.09x = 235,750,572,196.21
  5. Step 5: Solve for x
    x = 235,750,572,196.21/551,538.09
  6. Step 6: Final answer
    x = 427,442.05

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1.5x scale

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.