Home / 776,731.38-1,072,219.65-522,230.10

Finding the Fourth Proportional to 776,731.38, 1,072,219.65 and 522,230.10

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Solution

The fourth proportional to 776,731.38, 1,072,219.65 and 522,230.10 is: 720,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,731.38 : 1,072,219.65 = 522,230.10 : x
  2. Step 2: Convert to fraction form
    776,731.38/1,072,219.65 = 522,230.10/x
  3. Step 3: Cross multiply
    776,731.38x = 1,072,219.65 × 522,230.10
  4. Step 4: Simplify right side
    776,731.38x = 559,945,375,041.47
  5. Step 5: Solve for x
    x = 559,945,375,041.47/776,731.38
  6. Step 6: Final answer
    x = 720,899.64

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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.