Home / 711,896.15-982,417.07-389,606.06

Finding the Fourth Proportional to 711,896.15, 982,417.07 and 389,606.06

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Solution

The fourth proportional to 711,896.15, 982,417.07 and 389,606.06 is: 537,656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,896.15 : 982,417.07 = 389,606.06 : x
  2. Step 2: Convert to fraction form
    711,896.15/982,417.07 = 389,606.06/x
  3. Step 3: Cross multiply
    711,896.15x = 982,417.07 × 389,606.06
  4. Step 4: Simplify right side
    711,896.15x = 382,755,643,919.44
  5. Step 5: Solve for x
    x = 382,755,643,919.44/711,896.15
  6. Step 6: Final answer
    x = 537,656.57

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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.