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Finding the Fourth Proportional to 540,553.88, 746,038.55 and 311,106.53

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Solution

The fourth proportional to 540,553.88, 746,038.55 and 311,106.53 is: 429,369.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,553.88 : 746,038.55 = 311,106.53 : x
  2. Step 2: Convert to fraction form
    540,553.88/746,038.55 = 311,106.53/x
  3. Step 3: Cross multiply
    540,553.88x = 746,038.55 × 311,106.53
  4. Step 4: Simplify right side
    540,553.88x = 232,097,464,536.73
  5. Step 5: Solve for x
    x = 232,097,464,536.73/540,553.88
  6. Step 6: Final answer
    x = 429,369.71

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Double scale
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Similar ratio
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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.