Home / 915,257.05-1,372,870.86-284,171.47

Finding the Fourth Proportional to 915,257.05, 1,372,870.86 and 284,171.47

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Solution

The fourth proportional to 915,257.05, 1,372,870.86 and 284,171.47 is: 426,252.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,257.05 : 1,372,870.86 = 284,171.47 : x
  2. Step 2: Convert to fraction form
    915,257.05/1,372,870.86 = 284,171.47/x
  3. Step 3: Cross multiply
    915,257.05x = 1,372,870.86 × 284,171.47
  4. Step 4: Simplify right side
    915,257.05x = 390,130,730,406.36
  5. Step 5: Solve for x
    x = 390,130,730,406.36/915,257.05
  6. Step 6: Final answer
    x = 426,252.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.