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Finding the Fourth Proportional to 539,043.20, 807,009.60 and 476,835.20

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Solution

The fourth proportional to 539,043.20, 807,009.60 and 476,835.20 is: 713,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,043.20 : 807,009.60 = 476,835.20 : x
  2. Step 2: Convert to fraction form
    539,043.20/807,009.60 = 476,835.20/x
  3. Step 3: Cross multiply
    539,043.20x = 807,009.60 × 476,835.20
  4. Step 4: Simplify right side
    539,043.20x = 384,810,584,017.92
  5. Step 5: Solve for x
    x = 384,810,584,017.92/539,043.20
  6. Step 6: Final answer
    x = 713,877.08

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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.