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Finding the Fourth Proportional to 553,649.77, 830,991.28 and 283,980.36

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Solution

The fourth proportional to 553,649.77, 830,991.28 and 283,980.36 is: 426,235.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,649.77 : 830,991.28 = 283,980.36 : x
  2. Step 2: Convert to fraction form
    553,649.77/830,991.28 = 283,980.36/x
  3. Step 3: Cross multiply
    553,649.77x = 830,991.28 × 283,980.36
  4. Step 4: Simplify right side
    553,649.77x = 235,985,202,851.26
  5. Step 5: Solve for x
    x = 235,985,202,851.26/553,649.77
  6. Step 6: Final answer
    x = 426,235.53

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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.