Home / 920,055.45-1,269,688.59-506,640.69

Finding the Fourth Proportional to 920,055.45, 1,269,688.59 and 506,640.69

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Solution

The fourth proportional to 920,055.45, 1,269,688.59 and 506,640.69 is: 699,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,055.45 : 1,269,688.59 = 506,640.69 : x
  2. Step 2: Convert to fraction form
    920,055.45/1,269,688.59 = 506,640.69/x
  3. Step 3: Cross multiply
    920,055.45x = 1,269,688.59 × 506,640.69
  4. Step 4: Simplify right side
    920,055.45x = 643,275,899,391.16
  5. Step 5: Solve for x
    x = 643,275,899,391.16/920,055.45
  6. Step 6: Final answer
    x = 699,170.80

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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.