Home / 781,354,699.09-1,078,229,886.92-463,828,517.57

Finding the Fourth Proportional to 781,354,699.09, 1,078,229,886.92 and 463,828,517.57

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Solution

The fourth proportional to 781,354,699.09, 1,078,229,886.92 and 463,828,517.57 is: 640,059,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,354,699.09 : 1,078,229,886.92 = 463,828,517.57 : x
  2. Step 2: Convert to fraction form
    781,354,699.09/1,078,229,886.92 = 463,828,517.57/x
  3. Step 3: Cross multiply
    781,354,699.09x = 1,078,229,886.92 × 463,828,517.57
  4. Step 4: Simplify right side
    781,354,699.09x = 500,113,770,051,864,896
  5. Step 5: Solve for x
    x = 500,113,770,051,864,896/781,354,699.09
  6. Step 6: Final answer
    x = 640,059,848.15

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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.