Home / 790,776.60-1,091,276.95-428,200.45

Finding the Fourth Proportional to 790,776.60, 1,091,276.95 and 428,200.45

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Solution

The fourth proportional to 790,776.60, 1,091,276.95 and 428,200.45 is: 590,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,776.60 : 1,091,276.95 = 428,200.45 : x
  2. Step 2: Convert to fraction form
    790,776.60/1,091,276.95 = 428,200.45/x
  3. Step 3: Cross multiply
    790,776.60x = 1,091,276.95 × 428,200.45
  4. Step 4: Simplify right side
    790,776.60x = 467,285,279,933.71
  5. Step 5: Solve for x
    x = 467,285,279,933.71/790,776.60
  6. Step 6: Final answer
    x = 590,919.46

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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.