Home / 1,209,750,652.21-1,669,391,133.28-666,574,739.42

Finding the Fourth Proportional to 1,209,750,652.21, 1,669,391,133.28 and 666,574,739.42

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Solution

The fourth proportional to 1,209,750,652.21, 1,669,391,133.28 and 666,574,739.42 is: 919,837,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,750,652.21 : 1,669,391,133.28 = 666,574,739.42 : x
  2. Step 2: Convert to fraction form
    1,209,750,652.21/1,669,391,133.28 = 666,574,739.42/x
  3. Step 3: Cross multiply
    1,209,750,652.21x = 1,669,391,133.28 × 666,574,739.42
  4. Step 4: Simplify right side
    1,209,750,652.21x = 1,112,773,959,656,174,336
  5. Step 5: Solve for x
    x = 1,112,773,959,656,174,336/1,209,750,652.21
  6. Step 6: Final answer
    x = 919,837,453.80

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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.