Home / 1,292,912,141.87-1,939,368,238.50-310,338,681.36

Finding the Fourth Proportional to 1,292,912,141.87, 1,939,368,238.50 and 310,338,681.36

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Solution

The fourth proportional to 1,292,912,141.87, 1,939,368,238.50 and 310,338,681.36 is: 465,508,028.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,912,141.87 : 1,939,368,238.50 = 310,338,681.36 : x
  2. Step 2: Convert to fraction form
    1,292,912,141.87/1,939,368,238.50 = 310,338,681.36/x
  3. Step 3: Cross multiply
    1,292,912,141.87x = 1,939,368,238.50 × 310,338,681.36
  4. Step 4: Simplify right side
    1,292,912,141.87x = 601,860,981,799,104,128
  5. Step 5: Solve for x
    x = 601,860,981,799,104,128/1,292,912,141.87
  6. Step 6: Final answer
    x = 465,508,028.20

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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.