Home / 928,228.90-1,280,708.94-535,662.40

Finding the Fourth Proportional to 928,228.90, 1,280,708.94 and 535,662.40

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Solution

The fourth proportional to 928,228.90, 1,280,708.94 and 535,662.40 is: 739,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,228.90 : 1,280,708.94 = 535,662.40 : x
  2. Step 2: Convert to fraction form
    928,228.90/1,280,708.94 = 535,662.40/x
  3. Step 3: Cross multiply
    928,228.90x = 1,280,708.94 × 535,662.40
  4. Step 4: Simplify right side
    928,228.90x = 686,027,624,501.86
  5. Step 5: Solve for x
    x = 686,027,624,501.86/928,228.90
  6. Step 6: Final answer
    x = 739,071.61

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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.