Home / 712,165.32-982,811.34-389,875.32

Finding the Fourth Proportional to 712,165.32, 982,811.34 and 389,875.32

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Solution

The fourth proportional to 712,165.32, 982,811.34 and 389,875.32 is: 538,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,165.32 : 982,811.34 = 389,875.32 : x
  2. Step 2: Convert to fraction form
    712,165.32/982,811.34 = 389,875.32/x
  3. Step 3: Cross multiply
    712,165.32x = 982,811.34 × 389,875.32
  4. Step 4: Simplify right side
    712,165.32x = 383,173,885,682.13
  5. Step 5: Solve for x
    x = 383,173,885,682.13/712,165.32
  6. Step 6: Final answer
    x = 538,040.64

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Double scale
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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.