Home / 438,636,286,639.40-605,095,300,161.24-286,478,180,986.30

Finding the Fourth Proportional to 438,636,286,639.40, 605,095,300,161.24 and 286,478,180,986.30

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Solution

The fourth proportional to 438,636,286,639.40, 605,095,300,161.24 and 286,478,180,986.30 is: 395,194,392,697.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,636,286,639.40 : 605,095,300,161.24 = 286,478,180,986.30 : x
  2. Step 2: Convert to fraction form
    438,636,286,639.40/605,095,300,161.24 = 286,478,180,986.30/x
  3. Step 3: Cross multiply
    438,636,286,639.40x = 605,095,300,161.24 × 286,478,180,986.30
  4. Step 4: Simplify right side
    438,636,286,639.40x = 173,346,600,913,551,212,150,784
  5. Step 5: Solve for x
    x = 173,346,600,913,551,212,150,784/438,636,286,639.40
  6. Step 6: Final answer
    x = 395,194,392,697.52

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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.