Home / 900,728.51-1,242,859.16-498,242.75

Finding the Fourth Proportional to 900,728.51, 1,242,859.16 and 498,242.75

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Solution

The fourth proportional to 900,728.51, 1,242,859.16 and 498,242.75 is: 687,494.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,728.51 : 1,242,859.16 = 498,242.75 : x
  2. Step 2: Convert to fraction form
    900,728.51/1,242,859.16 = 498,242.75/x
  3. Step 3: Cross multiply
    900,728.51x = 1,242,859.16 × 498,242.75
  4. Step 4: Simplify right side
    900,728.51x = 619,245,563,249.88
  5. Step 5: Solve for x
    x = 619,245,563,249.88/900,728.51
  6. Step 6: Final answer
    x = 687,494.13

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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.