Home / 778,890.90-1,168,336.35-358,986.90

Finding the Fourth Proportional to 778,890.90, 1,168,336.35 and 358,986.90

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Solution

The fourth proportional to 778,890.90, 1,168,336.35 and 358,986.90 is: 538,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,890.90 : 1,168,336.35 = 358,986.90 : x
  2. Step 2: Convert to fraction form
    778,890.90/1,168,336.35 = 358,986.90/x
  3. Step 3: Cross multiply
    778,890.90x = 1,168,336.35 × 358,986.90
  4. Step 4: Simplify right side
    778,890.90x = 419,417,444,443.82
  5. Step 5: Solve for x
    x = 419,417,444,443.82/778,890.90
  6. Step 6: Final answer
    x = 538,480.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.