Home / 1,431,016,642,415.40-1,974,809,371,999.60-780,693,255,379.20

Finding the Fourth Proportional to 1,431,016,642,415.40, 1,974,809,371,999.60 and 780,693,255,379.20

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Solution

The fourth proportional to 1,431,016,642,415.40, 1,974,809,371,999.60 and 780,693,255,379.20 is: 1,077,360,186,934.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,016,642,415.40 : 1,974,809,371,999.60 = 780,693,255,379.20 : x
  2. Step 2: Convert to fraction form
    1,431,016,642,415.40/1,974,809,371,999.60 = 780,693,255,379.20/x
  3. Step 3: Cross multiply
    1,431,016,642,415.40x = 1,974,809,371,999.60 × 780,693,255,379.20
  4. Step 4: Simplify right side
    1,431,016,642,415.40x = 1,541,720,357,379,721,360,572,416
  5. Step 5: Solve for x
    x = 1,541,720,357,379,721,360,572,416/1,431,016,642,415.40
  6. Step 6: Final answer
    x = 1,077,360,186,934.98

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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.