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Finding the Fourth Proportional to 647,900.90, 894,097.14 and 357,515.18

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Solution

The fourth proportional to 647,900.90, 894,097.14 and 357,515.18 is: 493,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,900.90 : 894,097.14 = 357,515.18 : x
  2. Step 2: Convert to fraction form
    647,900.90/894,097.14 = 357,515.18/x
  3. Step 3: Cross multiply
    647,900.90x = 894,097.14 × 357,515.18
  4. Step 4: Simplify right side
    647,900.90x = 319,653,299,944.59
  5. Step 5: Solve for x
    x = 319,653,299,944.59/647,900.90
  6. Step 6: Final answer
    x = 493,367.58

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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.