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Finding the Fourth Proportional to 1,241,272,368.81, 1,714,590,978.75 and 920,051,522.11

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Solution

The fourth proportional to 1,241,272,368.81, 1,714,590,978.75 and 920,051,522.11 is: 1,270,883,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241,272,368.81 : 1,714,590,978.75 = 920,051,522.11 : x
  2. Step 2: Convert to fraction form
    1,241,272,368.81/1,714,590,978.75 = 920,051,522.11/x
  3. Step 3: Cross multiply
    1,241,272,368.81x = 1,714,590,978.75 × 920,051,522.11
  4. Step 4: Simplify right side
    1,241,272,368.81x = 1,577,512,039,795,012,096
  5. Step 5: Solve for x
    x = 1,577,512,039,795,012,096/1,241,272,368.81
  6. Step 6: Final answer
    x = 1,270,883,070.82

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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.