Home / 394,085,308,981.12-543,878,260,425.03-239,771,943,688.28

Finding the Fourth Proportional to 394,085,308,981.12, 543,878,260,425.03 and 239,771,943,688.28

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Solution

The fourth proportional to 394,085,308,981.12, 543,878,260,425.03 and 239,771,943,688.28 is: 330,909,944,268.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,085,308,981.12 : 543,878,260,425.03 = 239,771,943,688.28 : x
  2. Step 2: Convert to fraction form
    394,085,308,981.12/543,878,260,425.03 = 239,771,943,688.28/x
  3. Step 3: Cross multiply
    394,085,308,981.12x = 543,878,260,425.03 × 239,771,943,688.28
  4. Step 4: Simplify right side
    394,085,308,981.12x = 130,406,747,631,909,980,864,512
  5. Step 5: Solve for x
    x = 130,406,747,631,909,980,864,512/394,085,308,981.12
  6. Step 6: Final answer
    x = 330,909,944,268.33

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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.