Home / 686,895.55-1,025,340.13-636,242.35

Finding the Fourth Proportional to 686,895.55, 1,025,340.13 and 636,242.35

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Solution

The fourth proportional to 686,895.55, 1,025,340.13 and 636,242.35 is: 949,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,895.55 : 1,025,340.13 = 636,242.35 : x
  2. Step 2: Convert to fraction form
    686,895.55/1,025,340.13 = 636,242.35/x
  3. Step 3: Cross multiply
    686,895.55x = 1,025,340.13 × 636,242.35
  4. Step 4: Simplify right side
    686,895.55x = 652,364,810,436.11
  5. Step 5: Solve for x
    x = 652,364,810,436.11/686,895.55
  6. Step 6: Final answer
    x = 949,729.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.