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Finding the Fourth Proportional to 607,419.12, 911,297.64 and 265,801.68

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Solution

The fourth proportional to 607,419.12, 911,297.64 and 265,801.68 is: 398,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,419.12 : 911,297.64 = 265,801.68 : x
  2. Step 2: Convert to fraction form
    607,419.12/911,297.64 = 265,801.68/x
  3. Step 3: Cross multiply
    607,419.12x = 911,297.64 × 265,801.68
  4. Step 4: Simplify right side
    607,419.12x = 242,224,444,688.79
  5. Step 5: Solve for x
    x = 242,224,444,688.79/607,419.12
  6. Step 6: Final answer
    x = 398,776.45

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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.