Home / 985,382.84-1,360,045.98-640,618.64

Finding the Fourth Proportional to 985,382.84, 1,360,045.98 and 640,618.64

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Solution

The fourth proportional to 985,382.84, 1,360,045.98 and 640,618.64 is: 884,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,382.84 : 1,360,045.98 = 640,618.64 : x
  2. Step 2: Convert to fraction form
    985,382.84/1,360,045.98 = 640,618.64/x
  3. Step 3: Cross multiply
    985,382.84x = 1,360,045.98 × 640,618.64
  4. Step 4: Simplify right side
    985,382.84x = 871,270,806,045.07
  5. Step 5: Solve for x
    x = 871,270,806,045.07/985,382.84
  6. Step 6: Final answer
    x = 884,195.23

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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.