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Finding the Fourth Proportional to 513,925.70, 770,888.55 and 354,493.40

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Solution

The fourth proportional to 513,925.70, 770,888.55 and 354,493.40 is: 531,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,925.70 : 770,888.55 = 354,493.40 : x
  2. Step 2: Convert to fraction form
    513,925.70/770,888.55 = 354,493.40/x
  3. Step 3: Cross multiply
    513,925.70x = 770,888.55 × 354,493.40
  4. Step 4: Simplify right side
    513,925.70x = 273,274,903,110.57
  5. Step 5: Solve for x
    x = 273,274,903,110.57/513,925.70
  6. Step 6: Final answer
    x = 531,740.10

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1.5x scale

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.