Home / 891,656,040.59-1,230,337,697.11-515,347,670.21

Finding the Fourth Proportional to 891,656,040.59, 1,230,337,697.11 and 515,347,670.21

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Solution

The fourth proportional to 891,656,040.59, 1,230,337,697.11 and 515,347,670.21 is: 711,094,454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,656,040.59 : 1,230,337,697.11 = 515,347,670.21 : x
  2. Step 2: Convert to fraction form
    891,656,040.59/1,230,337,697.11 = 515,347,670.21/x
  3. Step 3: Cross multiply
    891,656,040.59x = 1,230,337,697.11 × 515,347,670.21
  4. Step 4: Simplify right side
    891,656,040.59x = 634,051,665,775,567,616
  5. Step 5: Solve for x
    x = 634,051,665,775,567,616/891,656,040.59
  6. Step 6: Final answer
    x = 711,094,454.49

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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.