Home / 563,936.50-778,281.57-309,336.89

Finding the Fourth Proportional to 563,936.50, 778,281.57 and 309,336.89

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Solution

The fourth proportional to 563,936.50, 778,281.57 and 309,336.89 is: 426,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,936.50 : 778,281.57 = 309,336.89 : x
  2. Step 2: Convert to fraction form
    563,936.50/778,281.57 = 309,336.89/x
  3. Step 3: Cross multiply
    563,936.50x = 778,281.57 × 309,336.89
  4. Step 4: Simplify right side
    563,936.50x = 240,751,200,408.12
  5. Step 5: Solve for x
    x = 240,751,200,408.12/563,936.50
  6. Step 6: Final answer
    x = 426,911.90

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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.