Home / 1,140,428.64-1,573,840.96-631,131.20

Finding the Fourth Proportional to 1,140,428.64, 1,573,840.96 and 631,131.20

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Solution

The fourth proportional to 1,140,428.64, 1,573,840.96 and 631,131.20 is: 870,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,428.64 : 1,573,840.96 = 631,131.20 : x
  2. Step 2: Convert to fraction form
    1,140,428.64/1,573,840.96 = 631,131.20/x
  3. Step 3: Cross multiply
    1,140,428.64x = 1,573,840.96 × 631,131.20
  4. Step 4: Simplify right side
    1,140,428.64x = 993,300,133,693.95
  5. Step 5: Solve for x
    x = 993,300,133,693.95/1,140,428.64
  6. Step 6: Final answer
    x = 870,988.42

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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.