Home / 557,400.48-769,220.88-315,677.04

Finding the Fourth Proportional to 557,400.48, 769,220.88 and 315,677.04

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Solution

The fourth proportional to 557,400.48, 769,220.88 and 315,677.04 is: 435,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,400.48 : 769,220.88 = 315,677.04 : x
  2. Step 2: Convert to fraction form
    557,400.48/769,220.88 = 315,677.04/x
  3. Step 3: Cross multiply
    557,400.48x = 769,220.88 × 315,677.04
  4. Step 4: Simplify right side
    557,400.48x = 242,825,370,504.60
  5. Step 5: Solve for x
    x = 242,825,370,504.60/557,400.48
  6. Step 6: Final answer
    x = 435,638.97

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1.5x scale

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.