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Finding the Fourth Proportional to 660,223.20, 992,448.90 and 613,421.40

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Solution

The fourth proportional to 660,223.20, 992,448.90 and 613,421.40 is: 922,096.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,223.20 : 992,448.90 = 613,421.40 : x
  2. Step 2: Convert to fraction form
    660,223.20/992,448.90 = 613,421.40/x
  3. Step 3: Cross multiply
    660,223.20x = 992,448.90 × 613,421.40
  4. Step 4: Simplify right side
    660,223.20x = 608,789,393,666.46
  5. Step 5: Solve for x
    x = 608,789,393,666.46/660,223.20
  6. Step 6: Final answer
    x = 922,096.34

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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.