Home / 637,120,357.72-879,270,283-386,235,324.38

Finding the Fourth Proportional to 637,120,357.72, 879,270,283 and 386,235,324.38

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Solution

The fourth proportional to 637,120,357.72, 879,270,283 and 386,235,324.38 is: 533,031,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,120,357.72 : 879,270,283 = 386,235,324.38 : x
  2. Step 2: Convert to fraction form
    637,120,357.72/879,270,283 = 386,235,324.38/x
  3. Step 3: Cross multiply
    637,120,357.72x = 879,270,283 × 386,235,324.38
  4. Step 4: Simplify right side
    637,120,357.72x = 339,605,242,972,199,424
  5. Step 5: Solve for x
    x = 339,605,242,972,199,424/637,120,357.72
  6. Step 6: Final answer
    x = 533,031,536.13

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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.