Home / 287,578,309.60-431,367,464.40-271,705,938.40

Finding the Fourth Proportional to 287,578,309.60, 431,367,464.40 and 271,705,938.40

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Solution

The fourth proportional to 287,578,309.60, 431,367,464.40 and 271,705,938.40 is: 407,558,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,578,309.60 : 431,367,464.40 = 271,705,938.40 : x
  2. Step 2: Convert to fraction form
    287,578,309.60/431,367,464.40 = 271,705,938.40/x
  3. Step 3: Cross multiply
    287,578,309.60x = 431,367,464.40 × 271,705,938.40
  4. Step 4: Simplify right side
    287,578,309.60x = 117,205,101,710,030,576
  5. Step 5: Solve for x
    x = 117,205,101,710,030,576/287,578,309.60
  6. Step 6: Final answer
    x = 407,558,907.60

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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.