Home / 1,216,500-1,678,702.23-672,603.12

Finding the Fourth Proportional to 1,216,500, 1,678,702.23 and 672,603.12

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Solution

The fourth proportional to 1,216,500, 1,678,702.23 and 672,603.12 is: 928,154.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,500 : 1,678,702.23 = 672,603.12 : x
  2. Step 2: Convert to fraction form
    1,216,500/1,678,702.23 = 672,603.12/x
  3. Step 3: Cross multiply
    1,216,500x = 1,678,702.23 × 672,603.12
  4. Step 4: Simplify right side
    1,216,500x = 1,129,100,357,448.96
  5. Step 5: Solve for x
    x = 1,129,100,357,448.96/1,216,500
  6. Step 6: Final answer
    x = 928,154.84

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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.