Home / 775,989,455.72-1,070,705,590.67-445,900,821.80

Finding the Fourth Proportional to 775,989,455.72, 1,070,705,590.67 and 445,900,821.80

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Solution

The fourth proportional to 775,989,455.72, 1,070,705,590.67 and 445,900,821.80 is: 615,251,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,989,455.72 : 1,070,705,590.67 = 445,900,821.80 : x
  2. Step 2: Convert to fraction form
    775,989,455.72/1,070,705,590.67 = 445,900,821.80/x
  3. Step 3: Cross multiply
    775,989,455.72x = 1,070,705,590.67 × 445,900,821.80
  4. Step 4: Simplify right side
    775,989,455.72x = 477,428,502,781,368,640
  5. Step 5: Solve for x
    x = 477,428,502,781,368,640/775,989,455.72
  6. Step 6: Final answer
    x = 615,251,275.99

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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.