Home / 760,426.20-1,049,278.32-420,893.64

Finding the Fourth Proportional to 760,426.20, 1,049,278.32 and 420,893.64

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Solution

The fourth proportional to 760,426.20, 1,049,278.32 and 420,893.64 is: 580,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,426.20 : 1,049,278.32 = 420,893.64 : x
  2. Step 2: Convert to fraction form
    760,426.20/1,049,278.32 = 420,893.64/x
  3. Step 3: Cross multiply
    760,426.20x = 1,049,278.32 × 420,893.64
  4. Step 4: Simplify right side
    760,426.20x = 441,634,571,477.89
  5. Step 5: Solve for x
    x = 441,634,571,477.89/760,426.20
  6. Step 6: Final answer
    x = 580,772.43

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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.