Home / 900,266.10-1,242,321.30-492,288.78

Finding the Fourth Proportional to 900,266.10, 1,242,321.30 and 492,288.78

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Solution

The fourth proportional to 900,266.10, 1,242,321.30 and 492,288.78 is: 679,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,266.10 : 1,242,321.30 = 492,288.78 : x
  2. Step 2: Convert to fraction form
    900,266.10/1,242,321.30 = 492,288.78/x
  3. Step 3: Cross multiply
    900,266.10x = 1,242,321.30 × 492,288.78
  4. Step 4: Simplify right side
    900,266.10x = 611,580,837,145.01
  5. Step 5: Solve for x
    x = 611,580,837,145.01/900,266.10
  6. Step 6: Final answer
    x = 679,333.41

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1.5x scale

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.