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Finding the Fourth Proportional to 652,284.80, 978,427.20 and 540,091.70

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Solution

The fourth proportional to 652,284.80, 978,427.20 and 540,091.70 is: 810,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,284.80 : 978,427.20 = 540,091.70 : x
  2. Step 2: Convert to fraction form
    652,284.80/978,427.20 = 540,091.70/x
  3. Step 3: Cross multiply
    652,284.80x = 978,427.20 × 540,091.70
  4. Step 4: Simplify right side
    652,284.80x = 528,440,409,774.24
  5. Step 5: Solve for x
    x = 528,440,409,774.24/652,284.80
  6. Step 6: Final answer
    x = 810,137.55

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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.