Home / 858,070.66-1,287,181.64-318,333.19

Finding the Fourth Proportional to 858,070.66, 1,287,181.64 and 318,333.19

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Solution

The fourth proportional to 858,070.66, 1,287,181.64 and 318,333.19 is: 477,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,070.66 : 1,287,181.64 = 318,333.19 : x
  2. Step 2: Convert to fraction form
    858,070.66/1,287,181.64 = 318,333.19/x
  3. Step 3: Cross multiply
    858,070.66x = 1,287,181.64 × 318,333.19
  4. Step 4: Simplify right side
    858,070.66x = 409,752,637,570.63
  5. Step 5: Solve for x
    x = 409,752,637,570.63/858,070.66
  6. Step 6: Final answer
    x = 477,527.85

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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.