Home / 658,821.12-909,173.64-357,015.12

Finding the Fourth Proportional to 658,821.12, 909,173.64 and 357,015.12

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Solution

The fourth proportional to 658,821.12, 909,173.64 and 357,015.12 is: 492,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,821.12 : 909,173.64 = 357,015.12 : x
  2. Step 2: Convert to fraction form
    658,821.12/909,173.64 = 357,015.12/x
  3. Step 3: Cross multiply
    658,821.12x = 909,173.64 × 357,015.12
  4. Step 4: Simplify right side
    658,821.12x = 324,588,736,185.44
  5. Step 5: Solve for x
    x = 324,588,736,185.44/658,821.12
  6. Step 6: Final answer
    x = 492,681.13

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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.