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Finding the Fourth Proportional to 820,412.88, 1,132,170 and 452,890.32

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Solution

The fourth proportional to 820,412.88, 1,132,170 and 452,890.32 is: 624,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,412.88 : 1,132,170 = 452,890.32 : x
  2. Step 2: Convert to fraction form
    820,412.88/1,132,170 = 452,890.32/x
  3. Step 3: Cross multiply
    820,412.88x = 1,132,170 × 452,890.32
  4. Step 4: Simplify right side
    820,412.88x = 512,748,833,594.40
  5. Step 5: Solve for x
    x = 512,748,833,594.40/820,412.88
  6. Step 6: Final answer
    x = 624,988.77

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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.