Home / 775,350,972.19-1,069,987,668.33-422,934,642.91

Finding the Fourth Proportional to 775,350,972.19, 1,069,987,668.33 and 422,934,642.91

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Solution

The fourth proportional to 775,350,972.19, 1,069,987,668.33 and 422,934,642.91 is: 583,651,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,350,972.19 : 1,069,987,668.33 = 422,934,642.91 : x
  2. Step 2: Convert to fraction form
    775,350,972.19/1,069,987,668.33 = 422,934,642.91/x
  3. Step 3: Cross multiply
    775,350,972.19x = 1,069,987,668.33 × 422,934,642.91
  4. Step 4: Simplify right side
    775,350,972.19x = 452,534,852,423,252,096
  5. Step 5: Solve for x
    x = 452,534,852,423,252,096/775,350,972.19
  6. Step 6: Final answer
    x = 583,651,621.85

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Double scale
Find fourth proportional to 775,350,973.19, 1,069,987,669.71 and 422,934,643.91
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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.