Home / 492,349.07-678,783.65-369,318.47

Finding the Fourth Proportional to 492,349.07, 678,783.65 and 369,318.47

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Solution

The fourth proportional to 492,349.07, 678,783.65 and 369,318.47 is: 509,165.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,349.07 : 678,783.65 = 369,318.47 : x
  2. Step 2: Convert to fraction form
    492,349.07/678,783.65 = 369,318.47/x
  3. Step 3: Cross multiply
    492,349.07x = 678,783.65 × 369,318.47
  4. Step 4: Simplify right side
    492,349.07x = 250,687,333,838.51
  5. Step 5: Solve for x
    x = 250,687,333,838.51/492,349.07
  6. Step 6: Final answer
    x = 509,165.86

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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.