Home / 645,012.96-890,041.74-383,327.52

Finding the Fourth Proportional to 645,012.96, 890,041.74 and 383,327.52

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Solution

The fourth proportional to 645,012.96, 890,041.74 and 383,327.52 is: 528,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,012.96 : 890,041.74 = 383,327.52 : x
  2. Step 2: Convert to fraction form
    645,012.96/890,041.74 = 383,327.52/x
  3. Step 3: Cross multiply
    645,012.96x = 890,041.74 × 383,327.52
  4. Step 4: Simplify right side
    645,012.96x = 341,177,492,890.69
  5. Step 5: Solve for x
    x = 341,177,492,890.69/645,012.96
  6. Step 6: Final answer
    x = 528,946.73

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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.