Home / 780,240.75-1,076,819.85-440,730.87

Finding the Fourth Proportional to 780,240.75, 1,076,819.85 and 440,730.87

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Solution

The fourth proportional to 780,240.75, 1,076,819.85 and 440,730.87 is: 608,258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,240.75 : 1,076,819.85 = 440,730.87 : x
  2. Step 2: Convert to fraction form
    780,240.75/1,076,819.85 = 440,730.87/x
  3. Step 3: Cross multiply
    780,240.75x = 1,076,819.85 × 440,730.87
  4. Step 4: Simplify right side
    780,240.75x = 474,587,749,323.77
  5. Step 5: Solve for x
    x = 474,587,749,323.77/780,240.75
  6. Step 6: Final answer
    x = 608,258.09

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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.