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Finding the Fourth Proportional to 648,750.40, 973,125.60 and 612,008.80

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Solution

The fourth proportional to 648,750.40, 973,125.60 and 612,008.80 is: 918,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,750.40 : 973,125.60 = 612,008.80 : x
  2. Step 2: Convert to fraction form
    648,750.40/973,125.60 = 612,008.80/x
  3. Step 3: Cross multiply
    648,750.40x = 973,125.60 × 612,008.80
  4. Step 4: Simplify right side
    648,750.40x = 595,561,430,705.28
  5. Step 5: Solve for x
    x = 595,561,430,705.28/648,750.40
  6. Step 6: Final answer
    x = 918,013.20

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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.