Home / 765,807.45-1,056,796.79-479,485.41

Finding the Fourth Proportional to 765,807.45, 1,056,796.79 and 479,485.41

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Solution

The fourth proportional to 765,807.45, 1,056,796.79 and 479,485.41 is: 661,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,807.45 : 1,056,796.79 = 479,485.41 : x
  2. Step 2: Convert to fraction form
    765,807.45/1,056,796.79 = 479,485.41/x
  3. Step 3: Cross multiply
    765,807.45x = 1,056,796.79 × 479,485.41
  4. Step 4: Simplify right side
    765,807.45x = 506,718,639,742.41
  5. Step 5: Solve for x
    x = 506,718,639,742.41/765,807.45
  6. Step 6: Final answer
    x = 661,678.91

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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.