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Finding the Fourth Proportional to 438,641.70, 605,606.94 and 358,262.16

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Solution

The fourth proportional to 438,641.70, 605,606.94 and 358,262.16 is: 494,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,641.70 : 605,606.94 = 358,262.16 : x
  2. Step 2: Convert to fraction form
    438,641.70/605,606.94 = 358,262.16/x
  3. Step 3: Cross multiply
    438,641.70x = 605,606.94 × 358,262.16
  4. Step 4: Simplify right side
    438,641.70x = 216,966,050,435.39
  5. Step 5: Solve for x
    x = 216,966,050,435.39/438,641.70
  6. Step 6: Final answer
    x = 494,631.61

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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.