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Finding the Fourth Proportional to 575,127.81, 793,640.27 and 316,990.55

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Solution

The fourth proportional to 575,127.81, 793,640.27 and 316,990.55 is: 437,427.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,127.81 : 793,640.27 = 316,990.55 : x
  2. Step 2: Convert to fraction form
    575,127.81/793,640.27 = 316,990.55/x
  3. Step 3: Cross multiply
    575,127.81x = 793,640.27 × 316,990.55
  4. Step 4: Simplify right side
    575,127.81x = 251,576,462,441.60
  5. Step 5: Solve for x
    x = 251,576,462,441.60/575,127.81
  6. Step 6: Final answer
    x = 437,427.06

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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.