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Finding the Fourth Proportional to 628,802.48, 867,599.88 and 356,808.80

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Solution

The fourth proportional to 628,802.48, 867,599.88 and 356,808.80 is: 492,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,802.48 : 867,599.88 = 356,808.80 : x
  2. Step 2: Convert to fraction form
    628,802.48/867,599.88 = 356,808.80/x
  3. Step 3: Cross multiply
    628,802.48x = 867,599.88 × 356,808.80
  4. Step 4: Simplify right side
    628,802.48x = 309,567,272,893.91
  5. Step 5: Solve for x
    x = 309,567,272,893.91/628,802.48
  6. Step 6: Final answer
    x = 492,312.42

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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.