Home / 878,011.16-1,211,630.52-515,429.24

Finding the Fourth Proportional to 878,011.16, 1,211,630.52 and 515,429.24

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Solution

The fourth proportional to 878,011.16, 1,211,630.52 and 515,429.24 is: 711,277.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,011.16 : 1,211,630.52 = 515,429.24 : x
  2. Step 2: Convert to fraction form
    878,011.16/1,211,630.52 = 515,429.24/x
  3. Step 3: Cross multiply
    878,011.16x = 1,211,630.52 × 515,429.24
  4. Step 4: Simplify right side
    878,011.16x = 624,509,798,084.41
  5. Step 5: Solve for x
    x = 624,509,798,084.41/878,011.16
  6. Step 6: Final answer
    x = 711,277.75

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1.5x scale

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.