Home / 1,172,561.91-1,759,146.10-686,654.40

Finding the Fourth Proportional to 1,172,561.91, 1,759,146.10 and 686,654.40

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Solution

The fourth proportional to 1,172,561.91, 1,759,146.10 and 686,654.40 is: 1,030,159.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,561.91 : 1,759,146.10 = 686,654.40 : x
  2. Step 2: Convert to fraction form
    1,172,561.91/1,759,146.10 = 686,654.40/x
  3. Step 3: Cross multiply
    1,172,561.91x = 1,759,146.10 × 686,654.40
  4. Step 4: Simplify right side
    1,172,561.91x = 1,207,925,416,992.18
  5. Step 5: Solve for x
    x = 1,207,925,416,992.18/1,172,561.91
  6. Step 6: Final answer
    x = 1,030,159.18

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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.