Home / 714,132.48-985,485.34-399,800.46

Finding the Fourth Proportional to 714,132.48, 985,485.34 and 399,800.46

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Solution

The fourth proportional to 714,132.48, 985,485.34 and 399,800.46 is: 551,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,132.48 : 985,485.34 = 399,800.46 : x
  2. Step 2: Convert to fraction form
    714,132.48/985,485.34 = 399,800.46/x
  3. Step 3: Cross multiply
    714,132.48x = 985,485.34 × 399,800.46
  4. Step 4: Simplify right side
    714,132.48x = 393,997,492,255.26
  5. Step 5: Solve for x
    x = 393,997,492,255.26/714,132.48
  6. Step 6: Final answer
    x = 551,714.85

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Double scale
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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.