Home / 778,480.76-1,074,304.13-434,316.76

Finding the Fourth Proportional to 778,480.76, 1,074,304.13 and 434,316.76

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Solution

The fourth proportional to 778,480.76, 1,074,304.13 and 434,316.76 is: 599,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,480.76 : 1,074,304.13 = 434,316.76 : x
  2. Step 2: Convert to fraction form
    778,480.76/1,074,304.13 = 434,316.76/x
  3. Step 3: Cross multiply
    778,480.76x = 1,074,304.13 × 434,316.76
  4. Step 4: Simplify right side
    778,480.76x = 466,588,284,138.88
  5. Step 5: Solve for x
    x = 466,588,284,138.88/778,480.76
  6. Step 6: Final answer
    x = 599,357.50

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Double scale
Find fourth proportional to 778,481.76, 1,074,305.51 and 434,317.76
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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.