Home / 841,128.40-1,160,742.27-478,544.46

Finding the Fourth Proportional to 841,128.40, 1,160,742.27 and 478,544.46

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Solution

The fourth proportional to 841,128.40, 1,160,742.27 and 478,544.46 is: 660,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,128.40 : 1,160,742.27 = 478,544.46 : x
  2. Step 2: Convert to fraction form
    841,128.40/1,160,742.27 = 478,544.46/x
  3. Step 3: Cross multiply
    841,128.40x = 1,160,742.27 × 478,544.46
  4. Step 4: Simplify right side
    841,128.40x = 555,466,782,796.32
  5. Step 5: Solve for x
    x = 555,466,782,796.32/841,128.40
  6. Step 6: Final answer
    x = 660,382.87

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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.