Home / 760,836.81-1,049,986.44-421,305.06

Finding the Fourth Proportional to 760,836.81, 1,049,986.44 and 421,305.06

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Solution

The fourth proportional to 760,836.81, 1,049,986.44 and 421,305.06 is: 581,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,836.81 : 1,049,986.44 = 421,305.06 : x
  2. Step 2: Convert to fraction form
    760,836.81/1,049,986.44 = 421,305.06/x
  3. Step 3: Cross multiply
    760,836.81x = 1,049,986.44 × 421,305.06
  4. Step 4: Simplify right side
    760,836.81x = 442,364,600,103.39
  5. Step 5: Solve for x
    x = 442,364,600,103.39/760,836.81
  6. Step 6: Final answer
    x = 581,418.50

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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.