Home / 287,785,039.28-431,615,709.48-91,064,041.52

Finding the Fourth Proportional to 287,785,039.28, 431,615,709.48 and 91,064,041.52

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Solution

The fourth proportional to 287,785,039.28, 431,615,709.48 and 91,064,041.52 is: 136,576,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,785,039.28 : 431,615,709.48 = 91,064,041.52 : x
  2. Step 2: Convert to fraction form
    287,785,039.28/431,615,709.48 = 91,064,041.52/x
  3. Step 3: Cross multiply
    287,785,039.28x = 431,615,709.48 × 91,064,041.52
  4. Step 4: Simplify right side
    287,785,039.28x = 39,304,670,888,770,976
  5. Step 5: Solve for x
    x = 39,304,670,888,770,976/287,785,039.28
  6. Step 6: Final answer
    x = 136,576,491.21

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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.