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Finding the Fourth Proportional to 680,657.36, 939,289.98 and 374,730.69

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Solution

The fourth proportional to 680,657.36, 939,289.98 and 374,730.69 is: 517,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,657.36 : 939,289.98 = 374,730.69 : x
  2. Step 2: Convert to fraction form
    680,657.36/939,289.98 = 374,730.69/x
  3. Step 3: Cross multiply
    680,657.36x = 939,289.98 × 374,730.69
  4. Step 4: Simplify right side
    680,657.36x = 351,980,782,315.49
  5. Step 5: Solve for x
    x = 351,980,782,315.49/680,657.36
  6. Step 6: Final answer
    x = 517,118.90

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1.5x scale

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.