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Finding the Fourth Proportional to 706,020.78, 974,308.80 and 383,730.87

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Solution

The fourth proportional to 706,020.78, 974,308.80 and 383,730.87 is: 529,548.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,020.78 : 974,308.80 = 383,730.87 : x
  2. Step 2: Convert to fraction form
    706,020.78/974,308.80 = 383,730.87/x
  3. Step 3: Cross multiply
    706,020.78x = 974,308.80 × 383,730.87
  4. Step 4: Simplify right side
    706,020.78x = 373,872,363,472.66
  5. Step 5: Solve for x
    x = 373,872,363,472.66/706,020.78
  6. Step 6: Final answer
    x = 529,548.67

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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.