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Finding the Fourth Proportional to 553,012.38, 762,763.77 and 369,158.36

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Solution

The fourth proportional to 553,012.38, 762,763.77 and 369,158.36 is: 509,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,012.38 : 762,763.77 = 369,158.36 : x
  2. Step 2: Convert to fraction form
    553,012.38/762,763.77 = 369,158.36/x
  3. Step 3: Cross multiply
    553,012.38x = 762,763.77 × 369,158.36
  4. Step 4: Simplify right side
    553,012.38x = 281,580,618,586.80
  5. Step 5: Solve for x
    x = 281,580,618,586.80/553,012.38
  6. Step 6: Final answer
    x = 509,175.98

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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.