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Finding the Fourth Proportional to 628,218.40, 940,772.40 and 503,802.40

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Solution

The fourth proportional to 628,218.40, 940,772.40 and 503,802.40 is: 754,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,218.40 : 940,772.40 = 503,802.40 : x
  2. Step 2: Convert to fraction form
    628,218.40/940,772.40 = 503,802.40/x
  3. Step 3: Cross multiply
    628,218.40x = 940,772.40 × 503,802.40
  4. Step 4: Simplify right side
    628,218.40x = 473,963,392,973.76
  5. Step 5: Solve for x
    x = 473,963,392,973.76/628,218.40
  6. Step 6: Final answer
    x = 754,456.40

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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.