Home / 761,648.40-1,141,090.20-620,643.60

Finding the Fourth Proportional to 761,648.40, 1,141,090.20 and 620,643.60

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Solution

The fourth proportional to 761,648.40, 1,141,090.20 and 620,643.60 is: 929,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,648.40 : 1,141,090.20 = 620,643.60 : x
  2. Step 2: Convert to fraction form
    761,648.40/1,141,090.20 = 620,643.60/x
  3. Step 3: Cross multiply
    761,648.40x = 1,141,090.20 × 620,643.60
  4. Step 4: Simplify right side
    761,648.40x = 708,210,329,652.72
  5. Step 5: Solve for x
    x = 708,210,329,652.72/761,648.40
  6. Step 6: Final answer
    x = 929,838.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.