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Finding the Fourth Proportional to 710,643.22, 980,372.64 and 423,996.64

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Solution

The fourth proportional to 710,643.22, 980,372.64 and 423,996.64 is: 584,927.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,643.22 : 980,372.64 = 423,996.64 : x
  2. Step 2: Convert to fraction form
    710,643.22/980,372.64 = 423,996.64/x
  3. Step 3: Cross multiply
    710,643.22x = 980,372.64 × 423,996.64
  4. Step 4: Simplify right side
    710,643.22x = 415,674,705,307.93
  5. Step 5: Solve for x
    x = 415,674,705,307.93/710,643.22
  6. Step 6: Final answer
    x = 584,927.42

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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.