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Finding the Fourth Proportional to 448,468.55, 621,558.10 and 440,070.47

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Solution

The fourth proportional to 448,468.55, 621,558.10 and 440,070.47 is: 609,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,468.55 : 621,558.10 = 440,070.47 : x
  2. Step 2: Convert to fraction form
    448,468.55/621,558.10 = 440,070.47/x
  3. Step 3: Cross multiply
    448,468.55x = 621,558.10 × 440,070.47
  4. Step 4: Simplify right side
    448,468.55x = 273,529,360,991.34
  5. Step 5: Solve for x
    x = 273,529,360,991.34/448,468.55
  6. Step 6: Final answer
    x = 609,918.72

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.