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Finding the Fourth Proportional to 492,772.32, 679,975.05 and 363,779.40

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Solution

The fourth proportional to 492,772.32, 679,975.05 and 363,779.40 is: 501,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,772.32 : 679,975.05 = 363,779.40 : x
  2. Step 2: Convert to fraction form
    492,772.32/679,975.05 = 363,779.40/x
  3. Step 3: Cross multiply
    492,772.32x = 679,975.05 × 363,779.40
  4. Step 4: Simplify right side
    492,772.32x = 247,360,915,703.97
  5. Step 5: Solve for x
    x = 247,360,915,703.97/492,772.32
  6. Step 6: Final answer
    x = 501,978.11

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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.