Home / 1,294,732,372.90-1,786,727,313.95-722,509,425.53

Finding the Fourth Proportional to 1,294,732,372.90, 1,786,727,313.95 and 722,509,425.53

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Solution

The fourth proportional to 1,294,732,372.90, 1,786,727,313.95 and 722,509,425.53 is: 997,061,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,732,372.90 : 1,786,727,313.95 = 722,509,425.53 : x
  2. Step 2: Convert to fraction form
    1,294,732,372.90/1,786,727,313.95 = 722,509,425.53/x
  3. Step 3: Cross multiply
    1,294,732,372.90x = 1,786,727,313.95 × 722,509,425.53
  4. Step 4: Simplify right side
    1,294,732,372.90x = 1,290,927,325,188,943,616
  5. Step 5: Solve for x
    x = 1,290,927,325,188,943,616/1,294,732,372.90
  6. Step 6: Final answer
    x = 997,061,131.87

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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.