Home / 1,223,286.75-1,688,135.72-686,742.75

Finding the Fourth Proportional to 1,223,286.75, 1,688,135.72 and 686,742.75

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Solution

The fourth proportional to 1,223,286.75, 1,688,135.72 and 686,742.75 is: 947,705.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,286.75 : 1,688,135.72 = 686,742.75 : x
  2. Step 2: Convert to fraction form
    1,223,286.75/1,688,135.72 = 686,742.75/x
  3. Step 3: Cross multiply
    1,223,286.75x = 1,688,135.72 × 686,742.75
  4. Step 4: Simplify right side
    1,223,286.75x = 1,159,314,963,292.32
  5. Step 5: Solve for x
    x = 1,159,314,963,292.32/1,223,286.75
  6. Step 6: Final answer
    x = 947,705.00

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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.