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Finding the Fourth Proportional to 551,666.58, 761,323.40 and 309,949.62

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Solution

The fourth proportional to 551,666.58, 761,323.40 and 309,949.62 is: 427,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,666.58 : 761,323.40 = 309,949.62 : x
  2. Step 2: Convert to fraction form
    551,666.58/761,323.40 = 309,949.62/x
  3. Step 3: Cross multiply
    551,666.58x = 761,323.40 × 309,949.62
  4. Step 4: Simplify right side
    551,666.58x = 235,971,898,527.11
  5. Step 5: Solve for x
    x = 235,971,898,527.11/551,666.58
  6. Step 6: Final answer
    x = 427,743.69

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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.