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Finding the Fourth Proportional to 631,416.95, 871,386.50 and 359,490.23

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Solution

The fourth proportional to 631,416.95, 871,386.50 and 359,490.23 is: 496,114.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,416.95 : 871,386.50 = 359,490.23 : x
  2. Step 2: Convert to fraction form
    631,416.95/871,386.50 = 359,490.23/x
  3. Step 3: Cross multiply
    631,416.95x = 871,386.50 × 359,490.23
  4. Step 4: Simplify right side
    631,416.95x = 313,254,933,303.90
  5. Step 5: Solve for x
    x = 313,254,933,303.90/631,416.95
  6. Step 6: Final answer
    x = 496,114.23

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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.