Home / 1,123,285.20-1,684,927.80-698,132.40

Finding the Fourth Proportional to 1,123,285.20, 1,684,927.80 and 698,132.40

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Solution

The fourth proportional to 1,123,285.20, 1,684,927.80 and 698,132.40 is: 1,047,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,285.20 : 1,684,927.80 = 698,132.40 : x
  2. Step 2: Convert to fraction form
    1,123,285.20/1,684,927.80 = 698,132.40/x
  3. Step 3: Cross multiply
    1,123,285.20x = 1,684,927.80 × 698,132.40
  4. Step 4: Simplify right side
    1,123,285.20x = 1,176,302,688,840.72
  5. Step 5: Solve for x
    x = 1,176,302,688,840.72/1,123,285.20
  6. Step 6: Final answer
    x = 1,047,198.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.