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Finding the Fourth Proportional to 658,900.40, 909,282.12 and 357,094.40

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Solution

The fourth proportional to 658,900.40, 909,282.12 and 357,094.40 is: 492,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,900.40 : 909,282.12 = 357,094.40 : x
  2. Step 2: Convert to fraction form
    658,900.40/909,282.12 = 357,094.40/x
  3. Step 3: Cross multiply
    658,900.40x = 909,282.12 × 357,094.40
  4. Step 4: Simplify right side
    658,900.40x = 324,699,553,072.13
  5. Step 5: Solve for x
    x = 324,699,553,072.13/658,900.40
  6. Step 6: Final answer
    x = 492,790.04

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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.