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Finding the Fourth Proportional to 562,408.11, 776,123.25 and 307,759.32

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Solution

The fourth proportional to 562,408.11, 776,123.25 and 307,759.32 is: 424,707.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,408.11 : 776,123.25 = 307,759.32 : x
  2. Step 2: Convert to fraction form
    562,408.11/776,123.25 = 307,759.32/x
  3. Step 3: Cross multiply
    562,408.11x = 776,123.25 × 307,759.32
  4. Step 4: Simplify right side
    562,408.11x = 238,859,163,656.19
  5. Step 5: Solve for x
    x = 238,859,163,656.19/562,408.11
  6. Step 6: Final answer
    x = 424,707.89

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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.