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Finding the Fourth Proportional to 553,314.70, 763,582.71 and 338,408.74

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Solution

The fourth proportional to 553,314.70, 763,582.71 and 338,408.74 is: 467,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,314.70 : 763,582.71 = 338,408.74 : x
  2. Step 2: Convert to fraction form
    553,314.70/763,582.71 = 338,408.74/x
  3. Step 3: Cross multiply
    553,314.70x = 763,582.71 × 338,408.74
  4. Step 4: Simplify right side
    553,314.70x = 258,403,062,776.89
  5. Step 5: Solve for x
    x = 258,403,062,776.89/553,314.70
  6. Step 6: Final answer
    x = 467,009.21

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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.