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Finding the Fourth Proportional to 705,408, 973,470.18 and 383,124.39

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Solution

The fourth proportional to 705,408, 973,470.18 and 383,124.39 is: 528,715.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,408 : 973,470.18 = 383,124.39 : x
  2. Step 2: Convert to fraction form
    705,408/973,470.18 = 383,124.39/x
  3. Step 3: Cross multiply
    705,408x = 973,470.18 × 383,124.39
  4. Step 4: Simplify right side
    705,408x = 372,960,168,895.69
  5. Step 5: Solve for x
    x = 372,960,168,895.69/705,408
  6. Step 6: Final answer
    x = 528,715.54

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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.