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Finding the Fourth Proportional to 1,297,479.72, 1,774,961.46 and 1,292,014.88

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Solution

The fourth proportional to 1,297,479.72, 1,774,961.46 and 1,292,014.88 is: 1,767,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,479.72 : 1,774,961.46 = 1,292,014.88 : x
  2. Step 2: Convert to fraction form
    1,297,479.72/1,774,961.46 = 1,292,014.88/x
  3. Step 3: Cross multiply
    1,297,479.72x = 1,774,961.46 × 1,292,014.88
  4. Step 4: Simplify right side
    1,297,479.72x = 2,293,276,617,746.52
  5. Step 5: Solve for x
    x = 2,293,276,617,746.52/1,297,479.72
  6. Step 6: Final answer
    x = 1,767,485.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.