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Finding the Fourth Proportional to 738,433, 1,019,037.56 and 398,901.28

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Solution

The fourth proportional to 738,433, 1,019,037.56 and 398,901.28 is: 550,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,433 : 1,019,037.56 = 398,901.28 : x
  2. Step 2: Convert to fraction form
    738,433/1,019,037.56 = 398,901.28/x
  3. Step 3: Cross multiply
    738,433x = 1,019,037.56 × 398,901.28
  4. Step 4: Simplify right side
    738,433x = 406,495,387,052.08
  5. Step 5: Solve for x
    x = 406,495,387,052.08/738,433
  6. Step 6: Final answer
    x = 550,483.78

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1.5x scale

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.