Home / 878,345.35-1,211,870.76-551,693.68

Finding the Fourth Proportional to 878,345.35, 1,211,870.76 and 551,693.68

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Solution

The fourth proportional to 878,345.35, 1,211,870.76 and 551,693.68 is: 761,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,345.35 : 1,211,870.76 = 551,693.68 : x
  2. Step 2: Convert to fraction form
    878,345.35/1,211,870.76 = 551,693.68/x
  3. Step 3: Cross multiply
    878,345.35x = 1,211,870.76 × 551,693.68
  4. Step 4: Simplify right side
    878,345.35x = 668,581,439,268.80
  5. Step 5: Solve for x
    x = 668,581,439,268.80/878,345.35
  6. Step 6: Final answer
    x = 761,182.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.