Home / 1,122,145.19-1,548,562.09-638,710.34

Finding the Fourth Proportional to 1,122,145.19, 1,548,562.09 and 638,710.34

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Solution

The fourth proportional to 1,122,145.19, 1,548,562.09 and 638,710.34 is: 881,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,145.19 : 1,548,562.09 = 638,710.34 : x
  2. Step 2: Convert to fraction form
    1,122,145.19/1,548,562.09 = 638,710.34/x
  3. Step 3: Cross multiply
    1,122,145.19x = 1,548,562.09 × 638,710.34
  4. Step 4: Simplify right side
    1,122,145.19x = 989,082,614,330.12
  5. Step 5: Solve for x
    x = 989,082,614,330.12/1,122,145.19
  6. Step 6: Final answer
    x = 881,421.25

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Double scale
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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.