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Finding the Fourth Proportional to 640,374.74, 883,693.32 and 368,484.68

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Solution

The fourth proportional to 640,374.74, 883,693.32 and 368,484.68 is: 508,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,374.74 : 883,693.32 = 368,484.68 : x
  2. Step 2: Convert to fraction form
    640,374.74/883,693.32 = 368,484.68/x
  3. Step 3: Cross multiply
    640,374.74x = 883,693.32 × 368,484.68
  4. Step 4: Simplify right side
    640,374.74x = 325,627,450,238.34
  5. Step 5: Solve for x
    x = 325,627,450,238.34/640,374.74
  6. Step 6: Final answer
    x = 508,495.15

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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.