Home / 878,518.80-1,317,389.40-404,960.40

Finding the Fourth Proportional to 878,518.80, 1,317,389.40 and 404,960.40

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Solution

The fourth proportional to 878,518.80, 1,317,389.40 and 404,960.40 is: 607,261.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,518.80 : 1,317,389.40 = 404,960.40 : x
  2. Step 2: Convert to fraction form
    878,518.80/1,317,389.40 = 404,960.40/x
  3. Step 3: Cross multiply
    878,518.80x = 1,317,389.40 × 404,960.40
  4. Step 4: Simplify right side
    878,518.80x = 533,490,538,379.76
  5. Step 5: Solve for x
    x = 533,490,538,379.76/878,518.80
  6. Step 6: Final answer
    x = 607,261.38

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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.