Home / 760,819.47-1,049,918.01-421,280.43

Finding the Fourth Proportional to 760,819.47, 1,049,918.01 and 421,280.43

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Solution

The fourth proportional to 760,819.47, 1,049,918.01 and 421,280.43 is: 581,359.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,819.47 : 1,049,918.01 = 421,280.43 : x
  2. Step 2: Convert to fraction form
    760,819.47/1,049,918.01 = 421,280.43/x
  3. Step 3: Cross multiply
    760,819.47x = 1,049,918.01 × 421,280.43
  4. Step 4: Simplify right side
    760,819.47x = 442,309,910,717.54
  5. Step 5: Solve for x
    x = 442,309,910,717.54/760,819.47
  6. Step 6: Final answer
    x = 581,359.87

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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.