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Finding the Fourth Proportional to 520,091.70, 778,409.55 and 377,531.70

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Solution

The fourth proportional to 520,091.70, 778,409.55 and 377,531.70 is: 565,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,091.70 : 778,409.55 = 377,531.70 : x
  2. Step 2: Convert to fraction form
    520,091.70/778,409.55 = 377,531.70/x
  3. Step 3: Cross multiply
    520,091.70x = 778,409.55 × 377,531.70
  4. Step 4: Simplify right side
    520,091.70x = 293,874,280,707.74
  5. Step 5: Solve for x
    x = 293,874,280,707.74/520,091.70
  6. Step 6: Final answer
    x = 565,043.20

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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.