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Finding the Fourth Proportional to 710,244.75, 980,131.95 and 387,954.93

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Solution

The fourth proportional to 710,244.75, 980,131.95 and 387,954.93 is: 535,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,244.75 : 980,131.95 = 387,954.93 : x
  2. Step 2: Convert to fraction form
    710,244.75/980,131.95 = 387,954.93/x
  3. Step 3: Cross multiply
    710,244.75x = 980,131.95 × 387,954.93
  4. Step 4: Simplify right side
    710,244.75x = 380,247,022,053.01
  5. Step 5: Solve for x
    x = 380,247,022,053.01/710,244.75
  6. Step 6: Final answer
    x = 535,374.63

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1.5x scale

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.