Home / 1,114,915,275.09-1,538,147,620.35-638,350,948.86

Finding the Fourth Proportional to 1,114,915,275.09, 1,538,147,620.35 and 638,350,948.86

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Solution

The fourth proportional to 1,114,915,275.09, 1,538,147,620.35 and 638,350,948.86 is: 880,674,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114,915,275.09 : 1,538,147,620.35 = 638,350,948.86 : x
  2. Step 2: Convert to fraction form
    1,114,915,275.09/1,538,147,620.35 = 638,350,948.86/x
  3. Step 3: Cross multiply
    1,114,915,275.09x = 1,538,147,620.35 × 638,350,948.86
  4. Step 4: Simplify right side
    1,114,915,275.09x = 981,877,992,941,014,912
  5. Step 5: Solve for x
    x = 981,877,992,941,014,912/1,114,915,275.09
  6. Step 6: Final answer
    x = 880,674,984.80

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Double scale
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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.