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Finding the Fourth Proportional to 631,886.40, 945,986.40 and 613,454.40

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Solution

The fourth proportional to 631,886.40, 945,986.40 and 613,454.40 is: 918,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,886.40 : 945,986.40 = 613,454.40 : x
  2. Step 2: Convert to fraction form
    631,886.40/945,986.40 = 613,454.40/x
  3. Step 3: Cross multiply
    631,886.40x = 945,986.40 × 613,454.40
  4. Step 4: Simplify right side
    631,886.40x = 580,319,519,420.16
  5. Step 5: Solve for x
    x = 580,319,519,420.16/631,886.40
  6. Step 6: Final answer
    x = 918,392.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.