Home / 1,147,970.88-1,584,199.80-638,673.12

Finding the Fourth Proportional to 1,147,970.88, 1,584,199.80 and 638,673.12

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Solution

The fourth proportional to 1,147,970.88, 1,584,199.80 and 638,673.12 is: 881,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,970.88 : 1,584,199.80 = 638,673.12 : x
  2. Step 2: Convert to fraction form
    1,147,970.88/1,584,199.80 = 638,673.12/x
  3. Step 3: Cross multiply
    1,147,970.88x = 1,584,199.80 × 638,673.12
  4. Step 4: Simplify right side
    1,147,970.88x = 1,011,785,828,969.38
  5. Step 5: Solve for x
    x = 1,011,785,828,969.38/1,147,970.88
  6. Step 6: Final answer
    x = 881,368.90

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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.