Home / 648,749.40-973,124.10-612,007.80

Finding the Fourth Proportional to 648,749.40, 973,124.10 and 612,007.80

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Solution

The fourth proportional to 648,749.40, 973,124.10 and 612,007.80 is: 918,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,749.40 : 973,124.10 = 612,007.80 : x
  2. Step 2: Convert to fraction form
    648,749.40/973,124.10 = 612,007.80/x
  3. Step 3: Cross multiply
    648,749.40x = 973,124.10 × 612,007.80
  4. Step 4: Simplify right side
    648,749.40x = 595,559,539,567.98
  5. Step 5: Solve for x
    x = 595,559,539,567.98/648,749.40
  6. Step 6: Final answer
    x = 918,011.70

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Similar ratio
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1.5x scale

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.