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Finding the Fourth Proportional to 1,021,281, 1,532,621.34 and 356,433

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Solution

The fourth proportional to 1,021,281, 1,532,621.34 and 356,433 is: 534,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,281 : 1,532,621.34 = 356,433 : x
  2. Step 2: Convert to fraction form
    1,021,281/1,532,621.34 = 356,433/x
  3. Step 3: Cross multiply
    1,021,281x = 1,532,621.34 × 356,433
  4. Step 4: Simplify right side
    1,021,281x = 546,276,822,080.22
  5. Step 5: Solve for x
    x = 546,276,822,080.22/1,021,281
  6. Step 6: Final answer
    x = 534,893.75

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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.