Home / 900,515.57-1,242,707.77-487,052.81

Finding the Fourth Proportional to 900,515.57, 1,242,707.77 and 487,052.81

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Solution

The fourth proportional to 900,515.57, 1,242,707.77 and 487,052.81 is: 672,130.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,515.57 : 1,242,707.77 = 487,052.81 : x
  2. Step 2: Convert to fraction form
    900,515.57/1,242,707.77 = 487,052.81/x
  3. Step 3: Cross multiply
    900,515.57x = 1,242,707.77 × 487,052.81
  4. Step 4: Simplify right side
    900,515.57x = 605,264,312,190.32
  5. Step 5: Solve for x
    x = 605,264,312,190.32/900,515.57
  6. Step 6: Final answer
    x = 672,130.87

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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.