Home / 739,480.10-1,020,482.60-399,948.35

Finding the Fourth Proportional to 739,480.10, 1,020,482.60 and 399,948.35

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Solution

The fourth proportional to 739,480.10, 1,020,482.60 and 399,948.35 is: 551,928.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,480.10 : 1,020,482.60 = 399,948.35 : x
  2. Step 2: Convert to fraction form
    739,480.10/1,020,482.60 = 399,948.35/x
  3. Step 3: Cross multiply
    739,480.10x = 1,020,482.60 × 399,948.35
  4. Step 4: Simplify right side
    739,480.10x = 408,140,324,971.56
  5. Step 5: Solve for x
    x = 408,140,324,971.56/739,480.10
  6. Step 6: Final answer
    x = 551,928.75

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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.