Home / 1,123,415.40-1,681,623.90-808,487.40

Finding the Fourth Proportional to 1,123,415.40, 1,681,623.90 and 808,487.40

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Solution

The fourth proportional to 1,123,415.40, 1,681,623.90 and 808,487.40 is: 1,210,212.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,415.40 : 1,681,623.90 = 808,487.40 : x
  2. Step 2: Convert to fraction form
    1,123,415.40/1,681,623.90 = 808,487.40/x
  3. Step 3: Cross multiply
    1,123,415.40x = 1,681,623.90 × 808,487.40
  4. Step 4: Simplify right side
    1,123,415.40x = 1,359,571,734,688.86
  5. Step 5: Solve for x
    x = 1,359,571,734,688.86/1,123,415.40
  6. Step 6: Final answer
    x = 1,210,212.83

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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.