Home / 712,829.32-983,704.44-390,551.64

Finding the Fourth Proportional to 712,829.32, 983,704.44 and 390,551.64

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Solution

The fourth proportional to 712,829.32, 983,704.44 and 390,551.64 is: 538,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,829.32 : 983,704.44 = 390,551.64 : x
  2. Step 2: Convert to fraction form
    712,829.32/983,704.44 = 390,551.64/x
  3. Step 3: Cross multiply
    712,829.32x = 983,704.44 × 390,551.64
  4. Step 4: Simplify right side
    712,829.32x = 384,187,382,317.28
  5. Step 5: Solve for x
    x = 384,187,382,317.28/712,829.32
  6. Step 6: Final answer
    x = 538,961.25

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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.