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Finding the Fourth Proportional to 713,005.78, 1,068,789 and 446,953.11

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Solution

The fourth proportional to 713,005.78, 1,068,789 and 446,953.11 is: 669,978.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,005.78 : 1,068,789 = 446,953.11 : x
  2. Step 2: Convert to fraction form
    713,005.78/1,068,789 = 446,953.11/x
  3. Step 3: Cross multiply
    713,005.78x = 1,068,789 × 446,953.11
  4. Step 4: Simplify right side
    713,005.78x = 477,698,567,483.79
  5. Step 5: Solve for x
    x = 477,698,567,483.79/713,005.78
  6. Step 6: Final answer
    x = 669,978.53

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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.