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Finding the Fourth Proportional to 648,751.40, 973,127.10 and 612,009.80

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Solution

The fourth proportional to 648,751.40, 973,127.10 and 612,009.80 is: 918,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,751.40 : 973,127.10 = 612,009.80 : x
  2. Step 2: Convert to fraction form
    648,751.40/973,127.10 = 612,009.80/x
  3. Step 3: Cross multiply
    648,751.40x = 973,127.10 × 612,009.80
  4. Step 4: Simplify right side
    648,751.40x = 595,563,321,845.58
  5. Step 5: Solve for x
    x = 595,563,321,845.58/648,751.40
  6. Step 6: Final answer
    x = 918,014.70

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Double scale
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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.