Home / 642,263.58-886,285.40-355,762.94

Finding the Fourth Proportional to 642,263.58, 886,285.40 and 355,762.94

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Solution

The fourth proportional to 642,263.58, 886,285.40 and 355,762.94 is: 490,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,263.58 : 886,285.40 = 355,762.94 : x
  2. Step 2: Convert to fraction form
    642,263.58/886,285.40 = 355,762.94/x
  3. Step 3: Cross multiply
    642,263.58x = 886,285.40 × 355,762.94
  4. Step 4: Simplify right side
    642,263.58x = 315,307,493,372.83
  5. Step 5: Solve for x
    x = 315,307,493,372.83/642,263.58
  6. Step 6: Final answer
    x = 490,931.61

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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.