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Finding the Fourth Proportional to 622,915.10, 932,404.35 and 489,070.70

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Solution

The fourth proportional to 622,915.10, 932,404.35 and 489,070.70 is: 732,060.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,915.10 : 932,404.35 = 489,070.70 : x
  2. Step 2: Convert to fraction form
    622,915.10/932,404.35 = 489,070.70/x
  3. Step 3: Cross multiply
    622,915.10x = 932,404.35 × 489,070.70
  4. Step 4: Simplify right side
    622,915.10x = 456,011,648,137.55
  5. Step 5: Solve for x
    x = 456,011,648,137.55/622,915.10
  6. Step 6: Final answer
    x = 732,060.67

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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.