Home / 878,752.80-1,318,129.20-519,501.60

Finding the Fourth Proportional to 878,752.80, 1,318,129.20 and 519,501.60

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Solution

The fourth proportional to 878,752.80, 1,318,129.20 and 519,501.60 is: 779,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,752.80 : 1,318,129.20 = 519,501.60 : x
  2. Step 2: Convert to fraction form
    878,752.80/1,318,129.20 = 519,501.60/x
  3. Step 3: Cross multiply
    878,752.80x = 1,318,129.20 × 519,501.60
  4. Step 4: Simplify right side
    878,752.80x = 684,770,228,406.72
  5. Step 5: Solve for x
    x = 684,770,228,406.72/878,752.80
  6. Step 6: Final answer
    x = 779,252.40

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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.