Home / 388,240,128,141.20-545,103,462,679.60-388,240,128,141.20

Finding the Fourth Proportional to 388,240,128,141.20, 545,103,462,679.60 and 388,240,128,141.20

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Solution

The fourth proportional to 388,240,128,141.20, 545,103,462,679.60 and 388,240,128,141.20 is: 545,103,462,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,240,128,141.20 : 545,103,462,679.60 = 388,240,128,141.20 : x
  2. Step 2: Convert to fraction form
    388,240,128,141.20/545,103,462,679.60 = 388,240,128,141.20/x
  3. Step 3: Cross multiply
    388,240,128,141.20x = 545,103,462,679.60 × 388,240,128,141.20
  4. Step 4: Simplify right side
    388,240,128,141.20x = 211,631,038,200,939,729,125,376
  5. Step 5: Solve for x
    x = 211,631,038,200,939,729,125,376/388,240,128,141.20
  6. Step 6: Final answer
    x = 545,103,462,679.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.