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Finding the Fourth Proportional to 612,004.20, 918,006.30 and 472,036.20

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Solution

The fourth proportional to 612,004.20, 918,006.30 and 472,036.20 is: 708,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,004.20 : 918,006.30 = 472,036.20 : x
  2. Step 2: Convert to fraction form
    612,004.20/918,006.30 = 472,036.20/x
  3. Step 3: Cross multiply
    612,004.20x = 918,006.30 × 472,036.20
  4. Step 4: Simplify right side
    612,004.20x = 433,332,205,428.06
  5. Step 5: Solve for x
    x = 433,332,205,428.06/612,004.20
  6. Step 6: Final answer
    x = 708,054.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.