Home / 716,087.16-988,225.65-393,822.18

Finding the Fourth Proportional to 716,087.16, 988,225.65 and 393,822.18

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Solution

The fourth proportional to 716,087.16, 988,225.65 and 393,822.18 is: 543,488.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,087.16 : 988,225.65 = 393,822.18 : x
  2. Step 2: Convert to fraction form
    716,087.16/988,225.65 = 393,822.18/x
  3. Step 3: Cross multiply
    716,087.16x = 988,225.65 × 393,822.18
  4. Step 4: Simplify right side
    716,087.16x = 389,185,179,814.92
  5. Step 5: Solve for x
    x = 389,185,179,814.92/716,087.16
  6. Step 6: Final answer
    x = 543,488.56

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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.