Home / 774,836.56-1,069,401.36-645,570.01

Finding the Fourth Proportional to 774,836.56, 1,069,401.36 and 645,570.01

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Solution

The fourth proportional to 774,836.56, 1,069,401.36 and 645,570.01 is: 890,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,836.56 : 1,069,401.36 = 645,570.01 : x
  2. Step 2: Convert to fraction form
    774,836.56/1,069,401.36 = 645,570.01/x
  3. Step 3: Cross multiply
    774,836.56x = 1,069,401.36 × 645,570.01
  4. Step 4: Simplify right side
    774,836.56x = 690,373,446,669.21
  5. Step 5: Solve for x
    x = 690,373,446,669.21/774,836.56
  6. Step 6: Final answer
    x = 890,992.35

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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.