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Finding the Fourth Proportional to 623,689, 860,693.22 and 348,058.60

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Solution

The fourth proportional to 623,689, 860,693.22 and 348,058.60 is: 480,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,689 : 860,693.22 = 348,058.60 : x
  2. Step 2: Convert to fraction form
    623,689/860,693.22 = 348,058.60/x
  3. Step 3: Cross multiply
    623,689x = 860,693.22 × 348,058.60
  4. Step 4: Simplify right side
    623,689x = 299,571,677,182.69
  5. Step 5: Solve for x
    x = 299,571,677,182.69/623,689
  6. Step 6: Final answer
    x = 480,322.21

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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.