Home / 631,411.56-871,634.76-402,283.08

Finding the Fourth Proportional to 631,411.56, 871,634.76 and 402,283.08

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Solution

The fourth proportional to 631,411.56, 871,634.76 and 402,283.08 is: 555,333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,411.56 : 871,634.76 = 402,283.08 : x
  2. Step 2: Convert to fraction form
    631,411.56/871,634.76 = 402,283.08/x
  3. Step 3: Cross multiply
    631,411.56x = 871,634.76 × 402,283.08
  4. Step 4: Simplify right side
    631,411.56x = 350,643,915,887.86
  5. Step 5: Solve for x
    x = 350,643,915,887.86/631,411.56
  6. Step 6: Final answer
    x = 555,333.38

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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.