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Finding the Fourth Proportional to 899,668.64, 1,241,549.52 and 491,765.60

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Solution

The fourth proportional to 899,668.64, 1,241,549.52 and 491,765.60 is: 678,640.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,668.64 : 1,241,549.52 = 491,765.60 : x
  2. Step 2: Convert to fraction form
    899,668.64/1,241,549.52 = 491,765.60/x
  3. Step 3: Cross multiply
    899,668.64x = 1,241,549.52 × 491,765.60
  4. Step 4: Simplify right side
    899,668.64x = 610,551,344,632.51
  5. Step 5: Solve for x
    x = 610,551,344,632.51/899,668.64
  6. Step 6: Final answer
    x = 678,640.24

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1.5x scale

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.