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Finding the Fourth Proportional to 599,435.70, 899,153.55 and 432,130.20

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Solution

The fourth proportional to 599,435.70, 899,153.55 and 432,130.20 is: 648,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,435.70 : 899,153.55 = 432,130.20 : x
  2. Step 2: Convert to fraction form
    599,435.70/899,153.55 = 432,130.20/x
  3. Step 3: Cross multiply
    599,435.70x = 899,153.55 × 432,130.20
  4. Step 4: Simplify right side
    599,435.70x = 388,551,403,392.21
  5. Step 5: Solve for x
    x = 388,551,403,392.21/599,435.70
  6. Step 6: Final answer
    x = 648,195.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.