Home / 771,284,278.09-1,064,698,032.95-520,728,100.75

Finding the Fourth Proportional to 771,284,278.09, 1,064,698,032.95 and 520,728,100.75

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Solution

The fourth proportional to 771,284,278.09, 1,064,698,032.95 and 520,728,100.75 is: 718,824,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,284,278.09 : 1,064,698,032.95 = 520,728,100.75 : x
  2. Step 2: Convert to fraction form
    771,284,278.09/1,064,698,032.95 = 520,728,100.75/x
  3. Step 3: Cross multiply
    771,284,278.09x = 1,064,698,032.95 × 520,728,100.75
  4. Step 4: Simplify right side
    771,284,278.09x = 554,418,184,570,314,432
  5. Step 5: Solve for x
    x = 554,418,184,570,314,432/771,284,278.09
  6. Step 6: Final answer
    x = 718,824,693.20

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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.