Home / 1,095,782.40-1,512,345.60-643,276.80

Finding the Fourth Proportional to 1,095,782.40, 1,512,345.60 and 643,276.80

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Solution

The fourth proportional to 1,095,782.40, 1,512,345.60 and 643,276.80 is: 887,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095,782.40 : 1,512,345.60 = 643,276.80 : x
  2. Step 2: Convert to fraction form
    1,095,782.40/1,512,345.60 = 643,276.80/x
  3. Step 3: Cross multiply
    1,095,782.40x = 1,512,345.60 × 643,276.80
  4. Step 4: Simplify right side
    1,095,782.40x = 972,856,838,062.08
  5. Step 5: Solve for x
    x = 972,856,838,062.08/1,095,782.40
  6. Step 6: Final answer
    x = 887,819.37

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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.