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Finding the Fourth Proportional to 555,999.78, 767,271.38 and 314,273.85

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Solution

The fourth proportional to 555,999.78, 767,271.38 and 314,273.85 is: 433,693.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,999.78 : 767,271.38 = 314,273.85 : x
  2. Step 2: Convert to fraction form
    555,999.78/767,271.38 = 314,273.85/x
  3. Step 3: Cross multiply
    555,999.78x = 767,271.38 × 314,273.85
  4. Step 4: Simplify right side
    555,999.78x = 241,133,329,016.04
  5. Step 5: Solve for x
    x = 241,133,329,016.04/555,999.78
  6. Step 6: Final answer
    x = 433,693.21

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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.