Home / 1,355,994.30-1,871,135.90-812,116.16

Finding the Fourth Proportional to 1,355,994.30, 1,871,135.90 and 812,116.16

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Solution

The fourth proportional to 1,355,994.30, 1,871,135.90 and 812,116.16 is: 1,120,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,994.30 : 1,871,135.90 = 812,116.16 : x
  2. Step 2: Convert to fraction form
    1,355,994.30/1,871,135.90 = 812,116.16/x
  3. Step 3: Cross multiply
    1,355,994.30x = 1,871,135.90 × 812,116.16
  4. Step 4: Simplify right side
    1,355,994.30x = 1,519,579,701,946.14
  5. Step 5: Solve for x
    x = 1,519,579,701,946.14/1,355,994.30
  6. Step 6: Final answer
    x = 1,120,638.71

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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.