Home / 761,180-1,050,428.40-421,670.24

Finding the Fourth Proportional to 761,180, 1,050,428.40 and 421,670.24

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Solution

The fourth proportional to 761,180, 1,050,428.40 and 421,670.24 is: 581,904.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,180 : 1,050,428.40 = 421,670.24 : x
  2. Step 2: Convert to fraction form
    761,180/1,050,428.40 = 421,670.24/x
  3. Step 3: Cross multiply
    761,180x = 1,050,428.40 × 421,670.24
  4. Step 4: Simplify right side
    761,180x = 442,934,395,530.82
  5. Step 5: Solve for x
    x = 442,934,395,530.82/761,180
  6. Step 6: Final answer
    x = 581,904.93

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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.