Home / 920,155.16-1,379,113.69-492,640.40

Finding the Fourth Proportional to 920,155.16, 1,379,113.69 and 492,640.40

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Solution

The fourth proportional to 920,155.16, 1,379,113.69 and 492,640.40 is: 738,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,155.16 : 1,379,113.69 = 492,640.40 : x
  2. Step 2: Convert to fraction form
    920,155.16/1,379,113.69 = 492,640.40/x
  3. Step 3: Cross multiply
    920,155.16x = 1,379,113.69 × 492,640.40
  4. Step 4: Simplify right side
    920,155.16x = 679,407,119,887.08
  5. Step 5: Solve for x
    x = 679,407,119,887.08/920,155.16
  6. Step 6: Final answer
    x = 738,361.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.