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Finding the Fourth Proportional to 568,161.52, 784,039.98 and 313,509.40

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Solution

The fourth proportional to 568,161.52, 784,039.98 and 313,509.40 is: 432,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,161.52 : 784,039.98 = 313,509.40 : x
  2. Step 2: Convert to fraction form
    568,161.52/784,039.98 = 313,509.40/x
  3. Step 3: Cross multiply
    568,161.52x = 784,039.98 × 313,509.40
  4. Step 4: Simplify right side
    568,161.52x = 245,803,903,705.81
  5. Step 5: Solve for x
    x = 245,803,903,705.81/568,161.52
  6. Step 6: Final answer
    x = 432,630.33

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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.