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Finding the Fourth Proportional to 647,637.08, 893,741.11 and 357,241.64

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Solution

The fourth proportional to 647,637.08, 893,741.11 and 357,241.64 is: 492,994.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,637.08 : 893,741.11 = 357,241.64 : x
  2. Step 2: Convert to fraction form
    647,637.08/893,741.11 = 357,241.64/x
  3. Step 3: Cross multiply
    647,637.08x = 893,741.11 × 357,241.64
  4. Step 4: Simplify right side
    647,637.08x = 319,281,534,510.01
  5. Step 5: Solve for x
    x = 319,281,534,510.01/647,637.08
  6. Step 6: Final answer
    x = 492,994.53

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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.