Home / 1,315,636.29-1,815,591.58-771,781.34

Finding the Fourth Proportional to 1,315,636.29, 1,815,591.58 and 771,781.34

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Solution

The fourth proportional to 1,315,636.29, 1,815,591.58 and 771,781.34 is: 1,065,066.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,636.29 : 1,815,591.58 = 771,781.34 : x
  2. Step 2: Convert to fraction form
    1,315,636.29/1,815,591.58 = 771,781.34/x
  3. Step 3: Cross multiply
    1,315,636.29x = 1,815,591.58 × 771,781.34
  4. Step 4: Simplify right side
    1,315,636.29x = 1,401,239,705,114.64
  5. Step 5: Solve for x
    x = 1,401,239,705,114.64/1,315,636.29
  6. Step 6: Final answer
    x = 1,065,066.17

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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.