Home / 917,989.50-1,266,944.31-515,581.50

Finding the Fourth Proportional to 917,989.50, 1,266,944.31 and 515,581.50

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Solution

The fourth proportional to 917,989.50, 1,266,944.31 and 515,581.50 is: 711,569.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,989.50 : 1,266,944.31 = 515,581.50 : x
  2. Step 2: Convert to fraction form
    917,989.50/1,266,944.31 = 515,581.50/x
  3. Step 3: Cross multiply
    917,989.50x = 1,266,944.31 × 515,581.50
  4. Step 4: Simplify right side
    917,989.50x = 653,213,047,766.27
  5. Step 5: Solve for x
    x = 653,213,047,766.27/917,989.50
  6. Step 6: Final answer
    x = 711,569.19

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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.