Home / 843,378.75-1,163,840.40-499,232.43

Finding the Fourth Proportional to 843,378.75, 1,163,840.40 and 499,232.43

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Solution

The fourth proportional to 843,378.75, 1,163,840.40 and 499,232.43 is: 688,927.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,378.75 : 1,163,840.40 = 499,232.43 : x
  2. Step 2: Convert to fraction form
    843,378.75/1,163,840.40 = 499,232.43/x
  3. Step 3: Cross multiply
    843,378.75x = 1,163,840.40 × 499,232.43
  4. Step 4: Simplify right side
    843,378.75x = 581,026,871,024.17
  5. Step 5: Solve for x
    x = 581,026,871,024.17/843,378.75
  6. Step 6: Final answer
    x = 688,927.57

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Double scale
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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.