Home / 641,428,405.58-885,171,199.77-348,072,973.58

Finding the Fourth Proportional to 641,428,405.58, 885,171,199.77 and 348,072,973.58

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Solution

The fourth proportional to 641,428,405.58, 885,171,199.77 and 348,072,973.58 is: 480,340,703.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,405.58 : 885,171,199.77 = 348,072,973.58 : x
  2. Step 2: Convert to fraction form
    641,428,405.58/885,171,199.77 = 348,072,973.58/x
  3. Step 3: Cross multiply
    641,428,405.58x = 885,171,199.77 × 348,072,973.58
  4. Step 4: Simplify right side
    641,428,405.58x = 308,104,171,631,320,064
  5. Step 5: Solve for x
    x = 308,104,171,631,320,064/641,428,405.58
  6. Step 6: Final answer
    x = 480,340,703.58

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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.