Home / 651,055.20-975,027.60-399,112.80

Finding the Fourth Proportional to 651,055.20, 975,027.60 and 399,112.80

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Solution

The fourth proportional to 651,055.20, 975,027.60 and 399,112.80 is: 597,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,055.20 : 975,027.60 = 399,112.80 : x
  2. Step 2: Convert to fraction form
    651,055.20/975,027.60 = 399,112.80/x
  3. Step 3: Cross multiply
    651,055.20x = 975,027.60 × 399,112.80
  4. Step 4: Simplify right side
    651,055.20x = 389,145,995,513.28
  5. Step 5: Solve for x
    x = 389,145,995,513.28/651,055.20
  6. Step 6: Final answer
    x = 597,715.82

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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.