Home / 857,688.68-1,286,117.04-258,538.16

Finding the Fourth Proportional to 857,688.68, 1,286,117.04 and 258,538.16

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Solution

The fourth proportional to 857,688.68, 1,286,117.04 and 258,538.16 is: 387,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,688.68 : 1,286,117.04 = 258,538.16 : x
  2. Step 2: Convert to fraction form
    857,688.68/1,286,117.04 = 258,538.16/x
  3. Step 3: Cross multiply
    857,688.68x = 1,286,117.04 × 258,538.16
  4. Step 4: Simplify right side
    857,688.68x = 332,510,333,066.25
  5. Step 5: Solve for x
    x = 332,510,333,066.25/857,688.68
  6. Step 6: Final answer
    x = 387,681.85

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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.