Home / 1,123,385.80-1,688,577.90-1,102,390.60

Finding the Fourth Proportional to 1,123,385.80, 1,688,577.90 and 1,102,390.60

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Solution

The fourth proportional to 1,123,385.80, 1,688,577.90 and 1,102,390.60 is: 1,657,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,385.80 : 1,688,577.90 = 1,102,390.60 : x
  2. Step 2: Convert to fraction form
    1,123,385.80/1,688,577.90 = 1,102,390.60/x
  3. Step 3: Cross multiply
    1,123,385.80x = 1,688,577.90 × 1,102,390.60
  4. Step 4: Simplify right side
    1,123,385.80x = 1,861,472,404,327.74
  5. Step 5: Solve for x
    x = 1,861,472,404,327.74/1,123,385.80
  6. Step 6: Final answer
    x = 1,657,019.70

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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.