Home / 760,819.21-1,049,917.67-421,280.17

Finding the Fourth Proportional to 760,819.21, 1,049,917.67 and 421,280.17

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Solution

The fourth proportional to 760,819.21, 1,049,917.67 and 421,280.17 is: 581,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,819.21 : 1,049,917.67 = 421,280.17 : x
  2. Step 2: Convert to fraction form
    760,819.21/1,049,917.67 = 421,280.17/x
  3. Step 3: Cross multiply
    760,819.21x = 1,049,917.67 × 421,280.17
  4. Step 4: Simplify right side
    760,819.21x = 442,309,494,503.60
  5. Step 5: Solve for x
    x = 442,309,494,503.60/760,819.21
  6. Step 6: Final answer
    x = 581,359.52

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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.