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Finding the Fourth Proportional to 680,712.15, 939,673.52 and 484,605.26

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Solution

The fourth proportional to 680,712.15, 939,673.52 and 484,605.26 is: 668,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,712.15 : 939,673.52 = 484,605.26 : x
  2. Step 2: Convert to fraction form
    680,712.15/939,673.52 = 484,605.26/x
  3. Step 3: Cross multiply
    680,712.15x = 939,673.52 × 484,605.26
  4. Step 4: Simplify right side
    680,712.15x = 455,370,723,353.32
  5. Step 5: Solve for x
    x = 455,370,723,353.32/680,712.15
  6. Step 6: Final answer
    x = 668,962.24

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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.