Home / 761,215.19-1,050,511.07-421,661.57

Finding the Fourth Proportional to 761,215.19, 1,050,511.07 and 421,661.57

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Solution

The fourth proportional to 761,215.19, 1,050,511.07 and 421,661.57 is: 581,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,215.19 : 1,050,511.07 = 421,661.57 : x
  2. Step 2: Convert to fraction form
    761,215.19/1,050,511.07 = 421,661.57/x
  3. Step 3: Cross multiply
    761,215.19x = 1,050,511.07 × 421,661.57
  4. Step 4: Simplify right side
    761,215.19x = 442,960,142,880.18
  5. Step 5: Solve for x
    x = 442,960,142,880.18/761,215.19
  6. Step 6: Final answer
    x = 581,911.86

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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.