Home / 900,228.32-1,242,467.84-518,476.12

Finding the Fourth Proportional to 900,228.32, 1,242,467.84 and 518,476.12

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Solution

The fourth proportional to 900,228.32, 1,242,467.84 and 518,476.12 is: 715,585.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,228.32 : 1,242,467.84 = 518,476.12 : x
  2. Step 2: Convert to fraction form
    900,228.32/1,242,467.84 = 518,476.12/x
  3. Step 3: Cross multiply
    900,228.32x = 1,242,467.84 × 518,476.12
  4. Step 4: Simplify right side
    900,228.32x = 644,189,904,907.98
  5. Step 5: Solve for x
    x = 644,189,904,907.98/900,228.32
  6. Step 6: Final answer
    x = 715,585.03

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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.