Home / 990,533.80-1,485,800.70-517,364.20

Finding the Fourth Proportional to 990,533.80, 1,485,800.70 and 517,364.20

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Solution

The fourth proportional to 990,533.80, 1,485,800.70 and 517,364.20 is: 776,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,533.80 : 1,485,800.70 = 517,364.20 : x
  2. Step 2: Convert to fraction form
    990,533.80/1,485,800.70 = 517,364.20/x
  3. Step 3: Cross multiply
    990,533.80x = 1,485,800.70 × 517,364.20
  4. Step 4: Simplify right side
    990,533.80x = 768,700,090,514.94
  5. Step 5: Solve for x
    x = 768,700,090,514.94/990,533.80
  6. Step 6: Final answer
    x = 776,046.30

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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.