Home / 1,123,386.80-1,688,579.40-1,102,391.60

Finding the Fourth Proportional to 1,123,386.80, 1,688,579.40 and 1,102,391.60

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Solution

The fourth proportional to 1,123,386.80, 1,688,579.40 and 1,102,391.60 is: 1,657,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,386.80 : 1,688,579.40 = 1,102,391.60 : x
  2. Step 2: Convert to fraction form
    1,123,386.80/1,688,579.40 = 1,102,391.60/x
  3. Step 3: Cross multiply
    1,123,386.80x = 1,688,579.40 × 1,102,391.60
  4. Step 4: Simplify right side
    1,123,386.80x = 1,861,475,746,493.04
  5. Step 5: Solve for x
    x = 1,861,475,746,493.04/1,123,386.80
  6. Step 6: Final answer
    x = 1,657,021.20

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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.