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Finding the Fourth Proportional to 821,397.64, 1,133,530.50 and 463,701.64

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Solution

The fourth proportional to 821,397.64, 1,133,530.50 and 463,701.64 is: 639,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,397.64 : 1,133,530.50 = 463,701.64 : x
  2. Step 2: Convert to fraction form
    821,397.64/1,133,530.50 = 463,701.64/x
  3. Step 3: Cross multiply
    821,397.64x = 1,133,530.50 × 463,701.64
  4. Step 4: Simplify right side
    821,397.64x = 525,619,951,840.02
  5. Step 5: Solve for x
    x = 525,619,951,840.02/821,397.64
  6. Step 6: Final answer
    x = 639,909.25

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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.