Home / 999,943,266.38-1,380,400,209.23-665,971,570.22

Finding the Fourth Proportional to 999,943,266.38, 1,380,400,209.23 and 665,971,570.22

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Solution

The fourth proportional to 999,943,266.38, 1,380,400,209.23 and 665,971,570.22 is: 919,359,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,943,266.38 : 1,380,400,209.23 = 665,971,570.22 : x
  2. Step 2: Convert to fraction form
    999,943,266.38/1,380,400,209.23 = 665,971,570.22/x
  3. Step 3: Cross multiply
    999,943,266.38x = 1,380,400,209.23 × 665,971,570.22
  4. Step 4: Simplify right side
    999,943,266.38x = 919,307,294,862,687,744
  5. Step 5: Solve for x
    x = 919,307,294,862,687,744/999,943,266.38
  6. Step 6: Final answer
    x = 919,359,453.46

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Double scale
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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.