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Finding the Fourth Proportional to 620,711.70, 930,981.15 and 200,030.10

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Solution

The fourth proportional to 620,711.70, 930,981.15 and 200,030.10 is: 300,017.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,711.70 : 930,981.15 = 200,030.10 : x
  2. Step 2: Convert to fraction form
    620,711.70/930,981.15 = 200,030.10/x
  3. Step 3: Cross multiply
    620,711.70x = 930,981.15 × 200,030.10
  4. Step 4: Simplify right side
    620,711.70x = 186,224,252,532.62
  5. Step 5: Solve for x
    x = 186,224,252,532.62/620,711.70
  6. Step 6: Final answer
    x = 300,017.31

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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.