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Finding the Fourth Proportional to 613,043.76, 845,873.60 and 358,345.68

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Solution

The fourth proportional to 613,043.76, 845,873.60 and 358,345.68 is: 494,442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,043.76 : 845,873.60 = 358,345.68 : x
  2. Step 2: Convert to fraction form
    613,043.76/845,873.60 = 358,345.68/x
  3. Step 3: Cross multiply
    613,043.76x = 845,873.60 × 358,345.68
  4. Step 4: Simplify right side
    613,043.76x = 303,115,150,386.05
  5. Step 5: Solve for x
    x = 303,115,150,386.05/613,043.76
  6. Step 6: Final answer
    x = 494,442.93

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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.