Home / 1,223,314.80-1,688,174.40-686,770.80

Finding the Fourth Proportional to 1,223,314.80, 1,688,174.40 and 686,770.80

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Solution

The fourth proportional to 1,223,314.80, 1,688,174.40 and 686,770.80 is: 947,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,314.80 : 1,688,174.40 = 686,770.80 : x
  2. Step 2: Convert to fraction form
    1,223,314.80/1,688,174.40 = 686,770.80/x
  3. Step 3: Cross multiply
    1,223,314.80x = 1,688,174.40 × 686,770.80
  4. Step 4: Simplify right side
    1,223,314.80x = 1,159,388,883,227.52
  5. Step 5: Solve for x
    x = 1,159,388,883,227.52/1,223,314.80
  6. Step 6: Final answer
    x = 947,743.69

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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.