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Finding the Fourth Proportional to 710,190.09, 980,057.34 and 387,900.27

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Solution

The fourth proportional to 710,190.09, 980,057.34 and 387,900.27 is: 535,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,190.09 : 980,057.34 = 387,900.27 : x
  2. Step 2: Convert to fraction form
    710,190.09/980,057.34 = 387,900.27/x
  3. Step 3: Cross multiply
    710,190.09x = 980,057.34 × 387,900.27
  4. Step 4: Simplify right side
    710,190.09x = 380,164,506,801.48
  5. Step 5: Solve for x
    x = 380,164,506,801.48/710,190.09
  6. Step 6: Final answer
    x = 535,299.65

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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.