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Finding the Fourth Proportional to 841,938.04, 1,262,497.72 and 280,783

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Solution

The fourth proportional to 841,938.04, 1,262,497.72 and 280,783 is: 421,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,938.04 : 1,262,497.72 = 280,783 : x
  2. Step 2: Convert to fraction form
    841,938.04/1,262,497.72 = 280,783/x
  3. Step 3: Cross multiply
    841,938.04x = 1,262,497.72 × 280,783
  4. Step 4: Simplify right side
    841,938.04x = 354,487,897,314.76
  5. Step 5: Solve for x
    x = 354,487,897,314.76/841,938.04
  6. Step 6: Final answer
    x = 421,037.99

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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.