Home / 760,721.25-1,049,828.13-421,189.50

Finding the Fourth Proportional to 760,721.25, 1,049,828.13 and 421,189.50

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Solution

The fourth proportional to 760,721.25, 1,049,828.13 and 421,189.50 is: 581,259.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,721.25 : 1,049,828.13 = 421,189.50 : x
  2. Step 2: Convert to fraction form
    760,721.25/1,049,828.13 = 421,189.50/x
  3. Step 3: Cross multiply
    760,721.25x = 1,049,828.13 × 421,189.50
  4. Step 4: Simplify right side
    760,721.25x = 442,176,585,160.64
  5. Step 5: Solve for x
    x = 442,176,585,160.64/760,721.25
  6. Step 6: Final answer
    x = 581,259.67

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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.