Home / 931,876.80-1,282,816.32-689,702.88

Finding the Fourth Proportional to 931,876.80, 1,282,816.32 and 689,702.88

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Solution

The fourth proportional to 931,876.80, 1,282,816.32 and 689,702.88 is: 949,441.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,876.80 : 1,282,816.32 = 689,702.88 : x
  2. Step 2: Convert to fraction form
    931,876.80/1,282,816.32 = 689,702.88/x
  3. Step 3: Cross multiply
    931,876.80x = 1,282,816.32 × 689,702.88
  4. Step 4: Simplify right side
    931,876.80x = 884,762,110,415.00
  5. Step 5: Solve for x
    x = 884,762,110,415.00/931,876.80
  6. Step 6: Final answer
    x = 949,441.07

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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.