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Finding the Fourth Proportional to 540,458.96, 745,907.45 and 311,011.53

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Solution

The fourth proportional to 540,458.96, 745,907.45 and 311,011.53 is: 429,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,458.96 : 745,907.45 = 311,011.53 : x
  2. Step 2: Convert to fraction form
    540,458.96/745,907.45 = 311,011.53/x
  3. Step 3: Cross multiply
    540,458.96x = 745,907.45 × 311,011.53
  4. Step 4: Simplify right side
    540,458.96x = 231,985,815,707.84
  5. Step 5: Solve for x
    x = 231,985,815,707.84/540,458.96
  6. Step 6: Final answer
    x = 429,238.55

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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.