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Finding the Fourth Proportional to 714,348.32, 985,728.89 and 427,861.04

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Solution

The fourth proportional to 714,348.32, 985,728.89 and 427,861.04 is: 590,405.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,348.32 : 985,728.89 = 427,861.04 : x
  2. Step 2: Convert to fraction form
    714,348.32/985,728.89 = 427,861.04/x
  3. Step 3: Cross multiply
    714,348.32x = 985,728.89 × 427,861.04
  4. Step 4: Simplify right side
    714,348.32x = 421,754,984,174.45
  5. Step 5: Solve for x
    x = 421,754,984,174.45/714,348.32
  6. Step 6: Final answer
    x = 590,405.23

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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.