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Finding the Fourth Proportional to 567,955.13, 783,780.32 and 309,837.60

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Solution

The fourth proportional to 567,955.13, 783,780.32 and 309,837.60 is: 427,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,955.13 : 783,780.32 = 309,837.60 : x
  2. Step 2: Convert to fraction form
    567,955.13/783,780.32 = 309,837.60/x
  3. Step 3: Cross multiply
    567,955.13x = 783,780.32 × 309,837.60
  4. Step 4: Simplify right side
    567,955.13x = 242,844,613,276.03
  5. Step 5: Solve for x
    x = 242,844,613,276.03/567,955.13
  6. Step 6: Final answer
    x = 427,577.11

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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.