Home / 1,297,238,242.80-1,948,961,636.27-831,811,543

Finding the Fourth Proportional to 1,297,238,242.80, 1,948,961,636.27 and 831,811,543

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Solution

The fourth proportional to 1,297,238,242.80, 1,948,961,636.27 and 831,811,543 is: 1,249,707,827.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,238,242.80 : 1,948,961,636.27 = 831,811,543 : x
  2. Step 2: Convert to fraction form
    1,297,238,242.80/1,948,961,636.27 = 831,811,543/x
  3. Step 3: Cross multiply
    1,297,238,242.80x = 1,948,961,636.27 × 831,811,543
  4. Step 4: Simplify right side
    1,297,238,242.80x = 1,621,168,785,913,553,408
  5. Step 5: Solve for x
    x = 1,621,168,785,913,553,408/1,297,238,242.80
  6. Step 6: Final answer
    x = 1,249,707,827.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.