Home / 1,223,268-1,688,109.84-686,724

Finding the Fourth Proportional to 1,223,268, 1,688,109.84 and 686,724

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Solution

The fourth proportional to 1,223,268, 1,688,109.84 and 686,724 is: 947,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,268 : 1,688,109.84 = 686,724 : x
  2. Step 2: Convert to fraction form
    1,223,268/1,688,109.84 = 686,724/x
  3. Step 3: Cross multiply
    1,223,268x = 1,688,109.84 × 686,724
  4. Step 4: Simplify right side
    1,223,268x = 1,159,265,541,764.16
  5. Step 5: Solve for x
    x = 1,159,265,541,764.16/1,223,268
  6. Step 6: Final answer
    x = 947,679.12

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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.