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Finding the Fourth Proportional to 767,248,808.81, 1,058,801,364.68 and 428,153,728.90

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Solution

The fourth proportional to 767,248,808.81, 1,058,801,364.68 and 428,153,728.90 is: 590,851,034.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,248,808.81 : 1,058,801,364.68 = 428,153,728.90 : x
  2. Step 2: Convert to fraction form
    767,248,808.81/1,058,801,364.68 = 428,153,728.90/x
  3. Step 3: Cross multiply
    767,248,808.81x = 1,058,801,364.68 × 428,153,728.90
  4. Step 4: Simplify right side
    767,248,808.81x = 453,329,752,447,362,944
  5. Step 5: Solve for x
    x = 453,329,752,447,362,944/767,248,808.81
  6. Step 6: Final answer
    x = 590,851,034.55

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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.