Home / 709,426.20-1,064,139.30-330,346.20

Finding the Fourth Proportional to 709,426.20, 1,064,139.30 and 330,346.20

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Solution

The fourth proportional to 709,426.20, 1,064,139.30 and 330,346.20 is: 495,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,426.20 : 1,064,139.30 = 330,346.20 : x
  2. Step 2: Convert to fraction form
    709,426.20/1,064,139.30 = 330,346.20/x
  3. Step 3: Cross multiply
    709,426.20x = 1,064,139.30 × 330,346.20
  4. Step 4: Simplify right side
    709,426.20x = 351,534,374,025.66
  5. Step 5: Solve for x
    x = 351,534,374,025.66/709,426.20
  6. Step 6: Final answer
    x = 495,519.30

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Half scale
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Double scale
Find fourth proportional to 709,427.20, 1,064,140.80 and 330,347.20
Similar ratio
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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.