Home / 778,345.30-1,074,114.76-438,811.12

Finding the Fourth Proportional to 778,345.30, 1,074,114.76 and 438,811.12

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Solution

The fourth proportional to 778,345.30, 1,074,114.76 and 438,811.12 is: 605,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,345.30 : 1,074,114.76 = 438,811.12 : x
  2. Step 2: Convert to fraction form
    778,345.30/1,074,114.76 = 438,811.12/x
  3. Step 3: Cross multiply
    778,345.30x = 1,074,114.76 × 438,811.12
  4. Step 4: Simplify right side
    778,345.30x = 471,333,493,279.50
  5. Step 5: Solve for x
    x = 471,333,493,279.50/778,345.30
  6. Step 6: Final answer
    x = 605,558.35

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Double scale
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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.