Home / 778,839.36-1,074,830.88-492,255.36

Finding the Fourth Proportional to 778,839.36, 1,074,830.88 and 492,255.36

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Solution

The fourth proportional to 778,839.36, 1,074,830.88 and 492,255.36 is: 679,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,839.36 : 1,074,830.88 = 492,255.36 : x
  2. Step 2: Convert to fraction form
    778,839.36/1,074,830.88 = 492,255.36/x
  3. Step 3: Cross multiply
    778,839.36x = 1,074,830.88 × 492,255.36
  4. Step 4: Simplify right side
    778,839.36x = 529,091,261,773.52
  5. Step 5: Solve for x
    x = 529,091,261,773.52/778,839.36
  6. Step 6: Final answer
    x = 679,332.98

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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.