Home / 540,639.61-811,196.79-256,535.55

Finding the Fourth Proportional to 540,639.61, 811,196.79 and 256,535.55

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Solution

The fourth proportional to 540,639.61, 811,196.79 and 256,535.55 is: 384,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,639.61 : 811,196.79 = 256,535.55 : x
  2. Step 2: Convert to fraction form
    540,639.61/811,196.79 = 256,535.55/x
  3. Step 3: Cross multiply
    540,639.61x = 811,196.79 × 256,535.55
  4. Step 4: Simplify right side
    540,639.61x = 208,100,814,680.89
  5. Step 5: Solve for x
    x = 208,100,814,680.89/540,639.61
  6. Step 6: Final answer
    x = 384,915.96

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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.