Home / 854,025,903.80-1,278,487,938.90-508,801,830.20

Finding the Fourth Proportional to 854,025,903.80, 1,278,487,938.90 and 508,801,830.20

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Solution

The fourth proportional to 854,025,903.80, 1,278,487,938.90 and 508,801,830.20 is: 761,682,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,025,903.80 : 1,278,487,938.90 = 508,801,830.20 : x
  2. Step 2: Convert to fraction form
    854,025,903.80/1,278,487,938.90 = 508,801,830.20/x
  3. Step 3: Cross multiply
    854,025,903.80x = 1,278,487,938.90 × 508,801,830.20
  4. Step 4: Simplify right side
    854,025,903.80x = 650,497,003,200,945,792
  5. Step 5: Solve for x
    x = 650,497,003,200,945,792/854,025,903.80
  6. Step 6: Final answer
    x = 761,682,989.13

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1.5x scale

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.