Home / 760,819.46-1,049,918.00-421,280.42

Finding the Fourth Proportional to 760,819.46, 1,049,918.00 and 421,280.42

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Solution

The fourth proportional to 760,819.46, 1,049,918.00 and 421,280.42 is: 581,359.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,819.46 : 1,049,918.00 = 421,280.42 : x
  2. Step 2: Convert to fraction form
    760,819.46/1,049,918.00 = 421,280.42/x
  3. Step 3: Cross multiply
    760,819.46x = 1,049,918.00 × 421,280.42
  4. Step 4: Simplify right side
    760,819.46x = 442,309,888,649.57
  5. Step 5: Solve for x
    x = 442,309,888,649.57/760,819.46
  6. Step 6: Final answer
    x = 581,359.86

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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.