Home / 646,786.58-970,395.75-286,907.76

Finding the Fourth Proportional to 646,786.58, 970,395.75 and 286,907.76

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Solution

The fourth proportional to 646,786.58, 970,395.75 and 286,907.76 is: 430,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,786.58 : 970,395.75 = 286,907.76 : x
  2. Step 2: Convert to fraction form
    646,786.58/970,395.75 = 286,907.76/x
  3. Step 3: Cross multiply
    646,786.58x = 970,395.75 × 286,907.76
  4. Step 4: Simplify right side
    646,786.58x = 278,414,070,946.02
  5. Step 5: Solve for x
    x = 278,414,070,946.02/646,786.58
  6. Step 6: Final answer
    x = 430,457.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.