Home / 781,629,100.95-1,078,666,899.67-424,411,933.64

Finding the Fourth Proportional to 781,629,100.95, 1,078,666,899.67 and 424,411,933.64

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Solution

The fourth proportional to 781,629,100.95, 1,078,666,899.67 and 424,411,933.64 is: 585,698,644.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,629,100.95 : 1,078,666,899.67 = 424,411,933.64 : x
  2. Step 2: Convert to fraction form
    781,629,100.95/1,078,666,899.67 = 424,411,933.64/x
  3. Step 3: Cross multiply
    781,629,100.95x = 1,078,666,899.67 × 424,411,933.64
  4. Step 4: Simplify right side
    781,629,100.95x = 457,799,104,640,390,464
  5. Step 5: Solve for x
    x = 457,799,104,640,390,464/781,629,100.95
  6. Step 6: Final answer
    x = 585,698,644.13

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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.