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Finding the Fourth Proportional to 658,930.32, 909,315.72 and 357,117.84

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Solution

The fourth proportional to 658,930.32, 909,315.72 and 357,117.84 is: 492,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,930.32 : 909,315.72 = 357,117.84 : x
  2. Step 2: Convert to fraction form
    658,930.32/909,315.72 = 357,117.84/x
  3. Step 3: Cross multiply
    658,930.32x = 909,315.72 × 357,117.84
  4. Step 4: Simplify right side
    658,930.32x = 324,732,865,804.45
  5. Step 5: Solve for x
    x = 324,732,865,804.45/658,930.32
  6. Step 6: Final answer
    x = 492,818.22

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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.