Home / 809,685,618.90-1,116,531,039.33-692,598,573.78

Finding the Fourth Proportional to 809,685,618.90, 1,116,531,039.33 and 692,598,573.78

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Solution

The fourth proportional to 809,685,618.90, 1,116,531,039.33 and 692,598,573.78 is: 955,071,681.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,685,618.90 : 1,116,531,039.33 = 692,598,573.78 : x
  2. Step 2: Convert to fraction form
    809,685,618.90/1,116,531,039.33 = 692,598,573.78/x
  3. Step 3: Cross multiply
    809,685,618.90x = 1,116,531,039.33 × 692,598,573.78
  4. Step 4: Simplify right side
    809,685,618.90x = 773,307,805,421,058,944
  5. Step 5: Solve for x
    x = 773,307,805,421,058,944/809,685,618.90
  6. Step 6: Final answer
    x = 955,071,681.37

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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.