Home / 771,467.80-1,157,386.48-321,938.60

Finding the Fourth Proportional to 771,467.80, 1,157,386.48 and 321,938.60

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Solution

The fourth proportional to 771,467.80, 1,157,386.48 and 321,938.60 is: 482,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,467.80 : 1,157,386.48 = 321,938.60 : x
  2. Step 2: Convert to fraction form
    771,467.80/1,157,386.48 = 321,938.60/x
  3. Step 3: Cross multiply
    771,467.80x = 1,157,386.48 × 321,938.60
  4. Step 4: Simplify right side
    771,467.80x = 372,607,383,030.13
  5. Step 5: Solve for x
    x = 372,607,383,030.13/771,467.80
  6. Step 6: Final answer
    x = 482,985.01

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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.