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Finding the Fourth Proportional to 690,967.38, 953,495.64 and 380,808.42

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Solution

The fourth proportional to 690,967.38, 953,495.64 and 380,808.42 is: 525,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,967.38 : 953,495.64 = 380,808.42 : x
  2. Step 2: Convert to fraction form
    690,967.38/953,495.64 = 380,808.42/x
  3. Step 3: Cross multiply
    690,967.38x = 953,495.64 × 380,808.42
  4. Step 4: Simplify right side
    690,967.38x = 363,099,168,145.29
  5. Step 5: Solve for x
    x = 363,099,168,145.29/690,967.38
  6. Step 6: Final answer
    x = 525,493.94

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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.