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Finding the Fourth Proportional to 613,039.76, 845,868.08 and 358,341.68

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Solution

The fourth proportional to 613,039.76, 845,868.08 and 358,341.68 is: 494,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,039.76 : 845,868.08 = 358,341.68 : x
  2. Step 2: Convert to fraction form
    613,039.76/845,868.08 = 358,341.68/x
  3. Step 3: Cross multiply
    613,039.76x = 845,868.08 × 358,341.68
  4. Step 4: Simplify right side
    613,039.76x = 303,109,788,845.57
  5. Step 5: Solve for x
    x = 303,109,788,845.57/613,039.76
  6. Step 6: Final answer
    x = 494,437.41

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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.