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Finding the Fourth Proportional to 710,202.10, 980,073.90 and 387,912.28

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Solution

The fourth proportional to 710,202.10, 980,073.90 and 387,912.28 is: 535,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,202.10 : 980,073.90 = 387,912.28 : x
  2. Step 2: Convert to fraction form
    710,202.10/980,073.90 = 387,912.28/x
  3. Step 3: Cross multiply
    710,202.10x = 980,073.90 × 387,912.28
  4. Step 4: Simplify right side
    710,202.10x = 380,182,701,117.49
  5. Step 5: Solve for x
    x = 380,182,701,117.49/710,202.10
  6. Step 6: Final answer
    x = 535,316.22

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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.