Home / 928,226.90-1,280,706.18-535,660.40

Finding the Fourth Proportional to 928,226.90, 1,280,706.18 and 535,660.40

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Solution

The fourth proportional to 928,226.90, 1,280,706.18 and 535,660.40 is: 739,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,226.90 : 1,280,706.18 = 535,660.40 : x
  2. Step 2: Convert to fraction form
    928,226.90/1,280,706.18 = 535,660.40/x
  3. Step 3: Cross multiply
    928,226.90x = 1,280,706.18 × 535,660.40
  4. Step 4: Simplify right side
    928,226.90x = 686,023,584,661.27
  5. Step 5: Solve for x
    x = 686,023,584,661.27/928,226.90
  6. Step 6: Final answer
    x = 739,068.85

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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.