Home / 783,394,700.48-1,082,635,806.45-642,042,973.03

Finding the Fourth Proportional to 783,394,700.48, 1,082,635,806.45 and 642,042,973.03

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Solution

The fourth proportional to 783,394,700.48, 1,082,635,806.45 and 642,042,973.03 is: 887,290,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,394,700.48 : 1,082,635,806.45 = 642,042,973.03 : x
  2. Step 2: Convert to fraction form
    783,394,700.48/1,082,635,806.45 = 642,042,973.03/x
  3. Step 3: Cross multiply
    783,394,700.48x = 1,082,635,806.45 × 642,042,973.03
  4. Step 4: Simplify right side
    783,394,700.48x = 695,098,711,879,183,104
  5. Step 5: Solve for x
    x = 695,098,711,879,183,104/783,394,700.48
  6. Step 6: Final answer
    x = 887,290,546.45

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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.