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Finding the Fourth Proportional to 499,848.40, 748,865.40 and 288,859.60

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Solution

The fourth proportional to 499,848.40, 748,865.40 and 288,859.60 is: 432,765.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,848.40 : 748,865.40 = 288,859.60 : x
  2. Step 2: Convert to fraction form
    499,848.40/748,865.40 = 288,859.60/x
  3. Step 3: Cross multiply
    499,848.40x = 748,865.40 × 288,859.60
  4. Step 4: Simplify right side
    499,848.40x = 216,316,959,897.84
  5. Step 5: Solve for x
    x = 216,316,959,897.84/499,848.40
  6. Step 6: Final answer
    x = 432,765.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.