Home / 776,720.97-1,071,749.75-490,395.69

Finding the Fourth Proportional to 776,720.97, 1,071,749.75 and 490,395.69

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Solution

The fourth proportional to 776,720.97, 1,071,749.75 and 490,395.69 is: 676,667.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,720.97 : 1,071,749.75 = 490,395.69 : x
  2. Step 2: Convert to fraction form
    776,720.97/1,071,749.75 = 490,395.69/x
  3. Step 3: Cross multiply
    776,720.97x = 1,071,749.75 × 490,395.69
  4. Step 4: Simplify right side
    776,720.97x = 525,581,455,706.60
  5. Step 5: Solve for x
    x = 525,581,455,706.60/776,720.97
  6. Step 6: Final answer
    x = 676,667.01

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1.5x scale

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.