Home / 900,213.51-1,242,174.36-497,831.43

Finding the Fourth Proportional to 900,213.51, 1,242,174.36 and 497,831.43

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Solution

The fourth proportional to 900,213.51, 1,242,174.36 and 497,831.43 is: 686,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,213.51 : 1,242,174.36 = 497,831.43 : x
  2. Step 2: Convert to fraction form
    900,213.51/1,242,174.36 = 497,831.43/x
  3. Step 3: Cross multiply
    900,213.51x = 1,242,174.36 × 497,831.43
  4. Step 4: Simplify right side
    900,213.51x = 618,393,437,948.14
  5. Step 5: Solve for x
    x = 618,393,437,948.14/900,213.51
  6. Step 6: Final answer
    x = 686,940.85

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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.