Home / 992,391.63-1,368,995.73-648,428.78

Finding the Fourth Proportional to 992,391.63, 1,368,995.73 and 648,428.78

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Solution

The fourth proportional to 992,391.63, 1,368,995.73 and 648,428.78 is: 894,501.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,391.63 : 1,368,995.73 = 648,428.78 : x
  2. Step 2: Convert to fraction form
    992,391.63/1,368,995.73 = 648,428.78/x
  3. Step 3: Cross multiply
    992,391.63x = 1,368,995.73 × 648,428.78
  4. Step 4: Simplify right side
    992,391.63x = 887,696,224,184.13
  5. Step 5: Solve for x
    x = 887,696,224,184.13/992,391.63
  6. Step 6: Final answer
    x = 894,501.93

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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.