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Finding the Fourth Proportional to 710,201.37, 980,071.44 and 387,911.40

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Solution

The fourth proportional to 710,201.37, 980,071.44 and 387,911.40 is: 535,314.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,201.37 : 980,071.44 = 387,911.40 : x
  2. Step 2: Convert to fraction form
    710,201.37/980,071.44 = 387,911.40/x
  3. Step 3: Cross multiply
    710,201.37x = 980,071.44 × 387,911.40
  4. Step 4: Simplify right side
    710,201.37x = 380,180,884,390.42
  5. Step 5: Solve for x
    x = 380,180,884,390.42/710,201.37
  6. Step 6: Final answer
    x = 535,314.21

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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.