Home / 857,543.07-1,285,987.64-288,771.46

Finding the Fourth Proportional to 857,543.07, 1,285,987.64 and 288,771.46

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Solution

The fourth proportional to 857,543.07, 1,285,987.64 and 288,771.46 is: 433,047.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,543.07 : 1,285,987.64 = 288,771.46 : x
  2. Step 2: Convert to fraction form
    857,543.07/1,285,987.64 = 288,771.46/x
  3. Step 3: Cross multiply
    857,543.07x = 1,285,987.64 × 288,771.46
  4. Step 4: Simplify right side
    857,543.07x = 371,356,531,461.06
  5. Step 5: Solve for x
    x = 371,356,531,461.06/857,543.07
  6. Step 6: Final answer
    x = 433,047.09

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Double scale
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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.