Home / 790,700.81-1,090,721.57-500,222.25

Finding the Fourth Proportional to 790,700.81, 1,090,721.57 and 500,222.25

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Solution

The fourth proportional to 790,700.81, 1,090,721.57 and 500,222.25 is: 690,024.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,700.81 : 1,090,721.57 = 500,222.25 : x
  2. Step 2: Convert to fraction form
    790,700.81/1,090,721.57 = 500,222.25/x
  3. Step 3: Cross multiply
    790,700.81x = 1,090,721.57 × 500,222.25
  4. Step 4: Simplify right side
    790,700.81x = 545,603,195,367.82
  5. Step 5: Solve for x
    x = 545,603,195,367.82/790,700.81
  6. Step 6: Final answer
    x = 690,024.84

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Double scale
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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.