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Finding the Fourth Proportional to 856,872, 1,181,990.88 and 534,427.20

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Solution

The fourth proportional to 856,872, 1,181,990.88 and 534,427.20 is: 737,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,872 : 1,181,990.88 = 534,427.20 : x
  2. Step 2: Convert to fraction form
    856,872/1,181,990.88 = 534,427.20/x
  3. Step 3: Cross multiply
    856,872x = 1,181,990.88 × 534,427.20
  4. Step 4: Simplify right side
    856,872x = 631,688,076,423.94
  5. Step 5: Solve for x
    x = 631,688,076,423.94/856,872
  6. Step 6: Final answer
    x = 737,202.38

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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.