Home / 900,138.56-1,242,191.16-492,240.71

Finding the Fourth Proportional to 900,138.56, 1,242,191.16 and 492,240.71

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Solution

The fourth proportional to 900,138.56, 1,242,191.16 and 492,240.71 is: 679,292.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,138.56 : 1,242,191.16 = 492,240.71 : x
  2. Step 2: Convert to fraction form
    900,138.56/1,242,191.16 = 492,240.71/x
  3. Step 3: Cross multiply
    900,138.56x = 1,242,191.16 × 492,240.71
  4. Step 4: Simplify right side
    900,138.56x = 611,457,061,659.60
  5. Step 5: Solve for x
    x = 611,457,061,659.60/900,138.56
  6. Step 6: Final answer
    x = 679,292.16

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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.