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Finding the Fourth Proportional to 710,215.56, 980,053.83 and 387,860.27

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Solution

The fourth proportional to 710,215.56, 980,053.83 and 387,860.27 is: 535,223.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,215.56 : 980,053.83 = 387,860.27 : x
  2. Step 2: Convert to fraction form
    710,215.56/980,053.83 = 387,860.27/x
  3. Step 3: Cross multiply
    710,215.56x = 980,053.83 × 387,860.27
  4. Step 4: Simplify right side
    710,215.56x = 380,123,938,218.07
  5. Step 5: Solve for x
    x = 380,123,938,218.07/710,215.56
  6. Step 6: Final answer
    x = 535,223.33

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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.