Home / 1,231,398,254.54-1,699,308,589.50-666,878,561.21

Finding the Fourth Proportional to 1,231,398,254.54, 1,699,308,589.50 and 666,878,561.21

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Solution

The fourth proportional to 1,231,398,254.54, 1,699,308,589.50 and 666,878,561.21 is: 920,281,040.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,398,254.54 : 1,699,308,589.50 = 666,878,561.21 : x
  2. Step 2: Convert to fraction form
    1,231,398,254.54/1,699,308,589.50 = 666,878,561.21/x
  3. Step 3: Cross multiply
    1,231,398,254.54x = 1,699,308,589.50 × 666,878,561.21
  4. Step 4: Simplify right side
    1,231,398,254.54x = 1,133,232,467,209,058,048
  5. Step 5: Solve for x
    x = 1,133,232,467,209,058,048/1,231,398,254.54
  6. Step 6: Final answer
    x = 920,281,040.71

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1.5x scale

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.