Home / 1,420,108.32-2,130,162.48-355,150.32

Finding the Fourth Proportional to 1,420,108.32, 2,130,162.48 and 355,150.32

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Solution

The fourth proportional to 1,420,108.32, 2,130,162.48 and 355,150.32 is: 532,725.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,108.32 : 2,130,162.48 = 355,150.32 : x
  2. Step 2: Convert to fraction form
    1,420,108.32/2,130,162.48 = 355,150.32/x
  3. Step 3: Cross multiply
    1,420,108.32x = 2,130,162.48 × 355,150.32
  4. Step 4: Simplify right side
    1,420,108.32x = 756,527,886,423.99
  5. Step 5: Solve for x
    x = 756,527,886,423.99/1,420,108.32
  6. Step 6: Final answer
    x = 532,725.48

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Half scale
Find fourth proportional to 2,840,216.64, 4,260,324.96 and 710,300.64
Double scale
Find fourth proportional to 1,420,109.32, 2,130,163.98 and 355,151.32
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.