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Finding the Fourth Proportional to 680,657.62, 939,271.85 and 374,674.23

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Solution

The fourth proportional to 680,657.62, 939,271.85 and 374,674.23 is: 517,030.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,657.62 : 939,271.85 = 374,674.23 : x
  2. Step 2: Convert to fraction form
    680,657.62/939,271.85 = 374,674.23/x
  3. Step 3: Cross multiply
    680,657.62x = 939,271.85 × 374,674.23
  4. Step 4: Simplify right side
    680,657.62x = 351,920,959,332.79
  5. Step 5: Solve for x
    x = 351,920,959,332.79/680,657.62
  6. Step 6: Final answer
    x = 517,030.81

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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.