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Finding the Fourth Proportional to 679,888,940.90, 1,019,833,411.35 and 623,201,900.90

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Solution

The fourth proportional to 679,888,940.90, 1,019,833,411.35 and 623,201,900.90 is: 934,802,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,888,940.90 : 1,019,833,411.35 = 623,201,900.90 : x
  2. Step 2: Convert to fraction form
    679,888,940.90/1,019,833,411.35 = 623,201,900.90/x
  3. Step 3: Cross multiply
    679,888,940.90x = 1,019,833,411.35 × 623,201,900.90
  4. Step 4: Simplify right side
    679,888,940.90x = 635,562,120,554,651,648
  5. Step 5: Solve for x
    x = 635,562,120,554,651,648/679,888,940.90
  6. Step 6: Final answer
    x = 934,802,851.35

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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.