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Finding the Fourth Proportional to 540,379.20, 745,815.84 and 314,155.92

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Solution

The fourth proportional to 540,379.20, 745,815.84 and 314,155.92 is: 433,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,379.20 : 745,815.84 = 314,155.92 : x
  2. Step 2: Convert to fraction form
    540,379.20/745,815.84 = 314,155.92/x
  3. Step 3: Cross multiply
    540,379.20x = 745,815.84 × 314,155.92
  4. Step 4: Simplify right side
    540,379.20x = 234,302,461,365.77
  5. Step 5: Solve for x
    x = 234,302,461,365.77/540,379.20
  6. Step 6: Final answer
    x = 433,588.97

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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.