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Finding the Fourth Proportional to 710,548.49, 980,563.77 and 388,258.53

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Solution

The fourth proportional to 710,548.49, 980,563.77 and 388,258.53 is: 535,800.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,548.49 : 980,563.77 = 388,258.53 : x
  2. Step 2: Convert to fraction form
    710,548.49/980,563.77 = 388,258.53/x
  3. Step 3: Cross multiply
    710,548.49x = 980,563.77 × 388,258.53
  4. Step 4: Simplify right side
    710,548.49x = 380,712,247,911.46
  5. Step 5: Solve for x
    x = 380,712,247,911.46/710,548.49
  6. Step 6: Final answer
    x = 535,800.52

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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.