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Finding the Fourth Proportional to 710,264.25, 980,158.86 and 387,974.43

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Solution

The fourth proportional to 710,264.25, 980,158.86 and 387,974.43 is: 535,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,264.25 : 980,158.86 = 387,974.43 : x
  2. Step 2: Convert to fraction form
    710,264.25/980,158.86 = 387,974.43/x
  3. Step 3: Cross multiply
    710,264.25x = 980,158.86 × 387,974.43
  4. Step 4: Simplify right side
    710,264.25x = 380,276,575,017.95
  5. Step 5: Solve for x
    x = 380,276,575,017.95/710,264.25
  6. Step 6: Final answer
    x = 535,401.54

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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.