Home / 1,221,484.20-1,685,646.72-677,702.40

Finding the Fourth Proportional to 1,221,484.20, 1,685,646.72 and 677,702.40

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Solution

The fourth proportional to 1,221,484.20, 1,685,646.72 and 677,702.40 is: 935,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,484.20 : 1,685,646.72 = 677,702.40 : x
  2. Step 2: Convert to fraction form
    1,221,484.20/1,685,646.72 = 677,702.40/x
  3. Step 3: Cross multiply
    1,221,484.20x = 1,685,646.72 × 677,702.40
  4. Step 4: Simplify right side
    1,221,484.20x = 1,142,366,827,696.13
  5. Step 5: Solve for x
    x = 1,142,366,827,696.13/1,221,484.20
  6. Step 6: Final answer
    x = 935,228.49

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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.