Home / 1,007,467.12-1,511,400.12-287,815.12

Finding the Fourth Proportional to 1,007,467.12, 1,511,400.12 and 287,815.12

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Solution

The fourth proportional to 1,007,467.12, 1,511,400.12 and 287,815.12 is: 431,779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,467.12 : 1,511,400.12 = 287,815.12 : x
  2. Step 2: Convert to fraction form
    1,007,467.12/1,511,400.12 = 287,815.12/x
  3. Step 3: Cross multiply
    1,007,467.12x = 1,511,400.12 × 287,815.12
  4. Step 4: Simplify right side
    1,007,467.12x = 435,003,806,905.81
  5. Step 5: Solve for x
    x = 435,003,806,905.81/1,007,467.12
  6. Step 6: Final answer
    x = 431,779.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.