Home / 1,007,000,777.51-1,389,598,458.42-554,853,442.20

Finding the Fourth Proportional to 1,007,000,777.51, 1,389,598,458.42 and 554,853,442.20

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Solution

The fourth proportional to 1,007,000,777.51, 1,389,598,458.42 and 554,853,442.20 is: 765,663,249.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,000,777.51 : 1,389,598,458.42 = 554,853,442.20 : x
  2. Step 2: Convert to fraction form
    1,007,000,777.51/1,389,598,458.42 = 554,853,442.20/x
  3. Step 3: Cross multiply
    1,007,000,777.51x = 1,389,598,458.42 × 554,853,442.20
  4. Step 4: Simplify right side
    1,007,000,777.51x = 771,023,487,930,150,656
  5. Step 5: Solve for x
    x = 771,023,487,930,150,656/1,007,000,777.51
  6. Step 6: Final answer
    x = 765,663,249.87

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Double scale
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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.