Home / 989,330.49-1,482,992.75-390,713.36

Finding the Fourth Proportional to 989,330.49, 1,482,992.75 and 390,713.36

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Solution

The fourth proportional to 989,330.49, 1,482,992.75 and 390,713.36 is: 585,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,330.49 : 1,482,992.75 = 390,713.36 : x
  2. Step 2: Convert to fraction form
    989,330.49/1,482,992.75 = 390,713.36/x
  3. Step 3: Cross multiply
    989,330.49x = 1,482,992.75 × 390,713.36
  4. Step 4: Simplify right side
    989,330.49x = 579,425,073,769.96
  5. Step 5: Solve for x
    x = 579,425,073,769.96/989,330.49
  6. Step 6: Final answer
    x = 585,673.93

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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.