Home / 783,394,698.23-1,082,635,803.34-642,042,970.78

Finding the Fourth Proportional to 783,394,698.23, 1,082,635,803.34 and 642,042,970.78

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Solution

The fourth proportional to 783,394,698.23, 1,082,635,803.34 and 642,042,970.78 is: 887,290,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,394,698.23 : 1,082,635,803.34 = 642,042,970.78 : x
  2. Step 2: Convert to fraction form
    783,394,698.23/1,082,635,803.34 = 642,042,970.78/x
  3. Step 3: Cross multiply
    783,394,698.23x = 1,082,635,803.34 × 642,042,970.78
  4. Step 4: Simplify right side
    783,394,698.23x = 695,098,707,448,716,032
  5. Step 5: Solve for x
    x = 695,098,707,448,716,032/783,394,698.23
  6. Step 6: Final answer
    x = 887,290,543.34

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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.