Home / 900,547.45-1,242,765.30-492,640.54

Finding the Fourth Proportional to 900,547.45, 1,242,765.30 and 492,640.54

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Solution

The fourth proportional to 900,547.45, 1,242,765.30 and 492,640.54 is: 679,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,547.45 : 1,242,765.30 = 492,640.54 : x
  2. Step 2: Convert to fraction form
    900,547.45/1,242,765.30 = 492,640.54/x
  3. Step 3: Cross multiply
    900,547.45x = 1,242,765.30 × 492,640.54
  4. Step 4: Simplify right side
    900,547.45x = 612,236,563,952.63
  5. Step 5: Solve for x
    x = 612,236,563,952.63/900,547.45
  6. Step 6: Final answer
    x = 679,849.31

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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.