Home / 760,817.21-1,049,914.91-421,278.17

Finding the Fourth Proportional to 760,817.21, 1,049,914.91 and 421,278.17

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Solution

The fourth proportional to 760,817.21, 1,049,914.91 and 421,278.17 is: 581,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,817.21 : 1,049,914.91 = 421,278.17 : x
  2. Step 2: Convert to fraction form
    760,817.21/1,049,914.91 = 421,278.17/x
  3. Step 3: Cross multiply
    760,817.21x = 1,049,914.91 × 421,278.17
  4. Step 4: Simplify right side
    760,817.21x = 442,306,227,744.14
  5. Step 5: Solve for x
    x = 442,306,227,744.14/760,817.21
  6. Step 6: Final answer
    x = 581,356.76

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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.