Home / 557,220.18-769,045.15-312,221.52

Finding the Fourth Proportional to 557,220.18, 769,045.15 and 312,221.52

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Solution

The fourth proportional to 557,220.18, 769,045.15 and 312,221.52 is: 430,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,220.18 : 769,045.15 = 312,221.52 : x
  2. Step 2: Convert to fraction form
    557,220.18/769,045.15 = 312,221.52/x
  3. Step 3: Cross multiply
    557,220.18x = 769,045.15 × 312,221.52
  4. Step 4: Simplify right side
    557,220.18x = 240,112,444,629.95
  5. Step 5: Solve for x
    x = 240,112,444,629.95/557,220.18
  6. Step 6: Final answer
    x = 430,911.25

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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.