Home / 622,921,785.60-934,382,678.40-521,640,940.80

Finding the Fourth Proportional to 622,921,785.60, 934,382,678.40 and 521,640,940.80

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Solution

The fourth proportional to 622,921,785.60, 934,382,678.40 and 521,640,940.80 is: 782,461,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,921,785.60 : 934,382,678.40 = 521,640,940.80 : x
  2. Step 2: Convert to fraction form
    622,921,785.60/934,382,678.40 = 521,640,940.80/x
  3. Step 3: Cross multiply
    622,921,785.60x = 934,382,678.40 × 521,640,940.80
  4. Step 4: Simplify right side
    622,921,785.60x = 487,412,259,427,799,808
  5. Step 5: Solve for x
    x = 487,412,259,427,799,808/622,921,785.60
  6. Step 6: Final answer
    x = 782,461,411.20

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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.