Home / 1,372,172,061.88-1,893,596,004.78-745,638,999.32

Finding the Fourth Proportional to 1,372,172,061.88, 1,893,596,004.78 and 745,638,999.32

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Solution

The fourth proportional to 1,372,172,061.88, 1,893,596,004.78 and 745,638,999.32 is: 1,028,981,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,172,061.88 : 1,893,596,004.78 = 745,638,999.32 : x
  2. Step 2: Convert to fraction form
    1,372,172,061.88/1,893,596,004.78 = 745,638,999.32/x
  3. Step 3: Cross multiply
    1,372,172,061.88x = 1,893,596,004.78 × 745,638,999.32
  4. Step 4: Simplify right side
    1,372,172,061.88x = 1,411,939,030,120,509,184
  5. Step 5: Solve for x
    x = 1,411,939,030,120,509,184/1,372,172,061.88
  6. Step 6: Final answer
    x = 1,028,981,036.23

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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.