Home / 760,731.39-1,049,842.11-421,199.64

Finding the Fourth Proportional to 760,731.39, 1,049,842.11 and 421,199.64

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Solution

The fourth proportional to 760,731.39, 1,049,842.11 and 421,199.64 is: 581,273.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,731.39 : 1,049,842.11 = 421,199.64 : x
  2. Step 2: Convert to fraction form
    760,731.39/1,049,842.11 = 421,199.64/x
  3. Step 3: Cross multiply
    760,731.39x = 1,049,842.11 × 421,199.64
  4. Step 4: Simplify right side
    760,731.39x = 442,193,118,788.84
  5. Step 5: Solve for x
    x = 442,193,118,788.84/760,731.39
  6. Step 6: Final answer
    x = 581,273.66

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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.