Home / 669,476.60-1,003,898.10-389,079.80

Finding the Fourth Proportional to 669,476.60, 1,003,898.10 and 389,079.80

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Solution

The fourth proportional to 669,476.60, 1,003,898.10 and 389,079.80 is: 583,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,476.60 : 1,003,898.10 = 389,079.80 : x
  2. Step 2: Convert to fraction form
    669,476.60/1,003,898.10 = 389,079.80/x
  3. Step 3: Cross multiply
    669,476.60x = 1,003,898.10 × 389,079.80
  4. Step 4: Simplify right side
    669,476.60x = 390,596,471,968.38
  5. Step 5: Solve for x
    x = 390,596,471,968.38/669,476.60
  6. Step 6: Final answer
    x = 583,435.59

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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.