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Finding the Fourth Proportional to 520,089.20, 780,133.80 and 362,495.60

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Solution

The fourth proportional to 520,089.20, 780,133.80 and 362,495.60 is: 543,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,089.20 : 780,133.80 = 362,495.60 : x
  2. Step 2: Convert to fraction form
    520,089.20/780,133.80 = 362,495.60/x
  3. Step 3: Cross multiply
    520,089.20x = 780,133.80 × 362,495.60
  4. Step 4: Simplify right side
    520,089.20x = 282,795,069,911.28
  5. Step 5: Solve for x
    x = 282,795,069,911.28/520,089.20
  6. Step 6: Final answer
    x = 543,743.40

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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.