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Finding the Fourth Proportional to 713,842.46, 985,094.79 and 391,551.38

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Solution

The fourth proportional to 713,842.46, 985,094.79 and 391,551.38 is: 540,336.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,842.46 : 985,094.79 = 391,551.38 : x
  2. Step 2: Convert to fraction form
    713,842.46/985,094.79 = 391,551.38/x
  3. Step 3: Cross multiply
    713,842.46x = 985,094.79 × 391,551.38
  4. Step 4: Simplify right side
    713,842.46x = 385,715,224,455.31
  5. Step 5: Solve for x
    x = 385,715,224,455.31/713,842.46
  6. Step 6: Final answer
    x = 540,336.62

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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.