Home / 878,539.20-1,317,808.80-579,422.40

Finding the Fourth Proportional to 878,539.20, 1,317,808.80 and 579,422.40

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Solution

The fourth proportional to 878,539.20, 1,317,808.80 and 579,422.40 is: 869,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,539.20 : 1,317,808.80 = 579,422.40 : x
  2. Step 2: Convert to fraction form
    878,539.20/1,317,808.80 = 579,422.40/x
  3. Step 3: Cross multiply
    878,539.20x = 1,317,808.80 × 579,422.40
  4. Step 4: Simplify right side
    878,539.20x = 763,567,937,637.12
  5. Step 5: Solve for x
    x = 763,567,937,637.12/878,539.20
  6. Step 6: Final answer
    x = 869,133.60

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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.