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Finding the Fourth Proportional to 713,907.02, 985,182.50 and 407,979.92

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Solution

The fourth proportional to 713,907.02, 985,182.50 and 407,979.92 is: 563,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,907.02 : 985,182.50 = 407,979.92 : x
  2. Step 2: Convert to fraction form
    713,907.02/985,182.50 = 407,979.92/x
  3. Step 3: Cross multiply
    713,907.02x = 985,182.50 × 407,979.92
  4. Step 4: Simplify right side
    713,907.02x = 401,934,677,535.40
  5. Step 5: Solve for x
    x = 401,934,677,535.40/713,907.02
  6. Step 6: Final answer
    x = 563,007.04

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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.