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Finding the Fourth Proportional to 679,658, 937,929.16 and 377,852

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Solution

The fourth proportional to 679,658, 937,929.16 and 377,852 is: 521,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,658 : 937,929.16 = 377,852 : x
  2. Step 2: Convert to fraction form
    679,658/937,929.16 = 377,852/x
  3. Step 3: Cross multiply
    679,658x = 937,929.16 × 377,852
  4. Step 4: Simplify right side
    679,658x = 354,398,408,964.32
  5. Step 5: Solve for x
    x = 354,398,408,964.32/679,658
  6. Step 6: Final answer
    x = 521,436.38

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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.