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Finding the Fourth Proportional to 540,641.24, 746,090.16 and 311,246.72

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Solution

The fourth proportional to 540,641.24, 746,090.16 and 311,246.72 is: 429,523.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,641.24 : 746,090.16 = 311,246.72 : x
  2. Step 2: Convert to fraction form
    540,641.24/746,090.16 = 311,246.72/x
  3. Step 3: Cross multiply
    540,641.24x = 746,090.16 × 311,246.72
  4. Step 4: Simplify right side
    540,641.24x = 232,218,115,124.28
  5. Step 5: Solve for x
    x = 232,218,115,124.28/540,641.24
  6. Step 6: Final answer
    x = 429,523.50

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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.