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Finding the Fourth Proportional to 557,998.09, 770,097.53 and 316,254.70

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Solution

The fourth proportional to 557,998.09, 770,097.53 and 316,254.70 is: 436,465.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,998.09 : 770,097.53 = 316,254.70 : x
  2. Step 2: Convert to fraction form
    557,998.09/770,097.53 = 316,254.70/x
  3. Step 3: Cross multiply
    557,998.09x = 770,097.53 × 316,254.70
  4. Step 4: Simplify right side
    557,998.09x = 243,546,965,461.12
  5. Step 5: Solve for x
    x = 243,546,965,461.12/557,998.09
  6. Step 6: Final answer
    x = 436,465.59

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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.