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Finding the Fourth Proportional to 652,515.80, 978,773.70 and 416,319.80

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Solution

The fourth proportional to 652,515.80, 978,773.70 and 416,319.80 is: 624,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,515.80 : 978,773.70 = 416,319.80 : x
  2. Step 2: Convert to fraction form
    652,515.80/978,773.70 = 416,319.80/x
  3. Step 3: Cross multiply
    652,515.80x = 978,773.70 × 416,319.80
  4. Step 4: Simplify right side
    652,515.80x = 407,482,871,029.26
  5. Step 5: Solve for x
    x = 407,482,871,029.26/652,515.80
  6. Step 6: Final answer
    x = 624,479.70

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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.