Home / 1,421,090.87-1,960,881.01-808,900.56

Finding the Fourth Proportional to 1,421,090.87, 1,960,881.01 and 808,900.56

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Solution

The fourth proportional to 1,421,090.87, 1,960,881.01 and 808,900.56 is: 1,116,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,090.87 : 1,960,881.01 = 808,900.56 : x
  2. Step 2: Convert to fraction form
    1,421,090.87/1,960,881.01 = 808,900.56/x
  3. Step 3: Cross multiply
    1,421,090.87x = 1,960,881.01 × 808,900.56
  4. Step 4: Simplify right side
    1,421,090.87x = 1,586,157,745,060.11
  5. Step 5: Solve for x
    x = 1,586,157,745,060.11/1,421,090.87
  6. Step 6: Final answer
    x = 1,116,155.05

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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.