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Finding the Fourth Proportional to 626,699.60, 940,663.80 and 311,512.40

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Solution

The fourth proportional to 626,699.60, 940,663.80 and 311,512.40 is: 467,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,699.60 : 940,663.80 = 311,512.40 : x
  2. Step 2: Convert to fraction form
    626,699.60/940,663.80 = 311,512.40/x
  3. Step 3: Cross multiply
    626,699.60x = 940,663.80 × 311,512.40
  4. Step 4: Simplify right side
    626,699.60x = 293,028,437,931.12
  5. Step 5: Solve for x
    x = 293,028,437,931.12/626,699.60
  6. Step 6: Final answer
    x = 467,574.00

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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.