Home / 857,547.78-1,285,904.89-258,397.26

Finding the Fourth Proportional to 857,547.78, 1,285,904.89 and 258,397.26

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Solution

The fourth proportional to 857,547.78, 1,285,904.89 and 258,397.26 is: 387,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,547.78 : 1,285,904.89 = 258,397.26 : x
  2. Step 2: Convert to fraction form
    857,547.78/1,285,904.89 = 258,397.26/x
  3. Step 3: Cross multiply
    857,547.78x = 1,285,904.89 × 258,397.26
  4. Step 4: Simplify right side
    857,547.78x = 332,274,300,196.60
  5. Step 5: Solve for x
    x = 332,274,300,196.60/857,547.78
  6. Step 6: Final answer
    x = 387,470.31

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1.5x scale

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.