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Finding the Fourth Proportional to 448,355.52, 670,548.96 and 398,782.08

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Solution

The fourth proportional to 448,355.52, 670,548.96 and 398,782.08 is: 596,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,355.52 : 670,548.96 = 398,782.08 : x
  2. Step 2: Convert to fraction form
    448,355.52/670,548.96 = 398,782.08/x
  3. Step 3: Cross multiply
    448,355.52x = 670,548.96 × 398,782.08
  4. Step 4: Simplify right side
    448,355.52x = 267,402,909,010.64
  5. Step 5: Solve for x
    x = 267,402,909,010.64/448,355.52
  6. Step 6: Final answer
    x = 596,408.20

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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.