Home / 638,207,918.40-956,640,031.20-249,880,699.20

Finding the Fourth Proportional to 638,207,918.40, 956,640,031.20 and 249,880,699.20

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Solution

The fourth proportional to 638,207,918.40, 956,640,031.20 and 249,880,699.20 is: 374,557,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,207,918.40 : 956,640,031.20 = 249,880,699.20 : x
  2. Step 2: Convert to fraction form
    638,207,918.40/956,640,031.20 = 249,880,699.20/x
  3. Step 3: Cross multiply
    638,207,918.40x = 956,640,031.20 × 249,880,699.20
  4. Step 4: Simplify right side
    638,207,918.40x = 239,045,879,878,965,824
  5. Step 5: Solve for x
    x = 239,045,879,878,965,824/638,207,918.40
  6. Step 6: Final answer
    x = 374,557,997.46

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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.