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Finding the Fourth Proportional to 648,014.40, 972,021.60 and 611,272.80

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Solution

The fourth proportional to 648,014.40, 972,021.60 and 611,272.80 is: 916,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,014.40 : 972,021.60 = 611,272.80 : x
  2. Step 2: Convert to fraction form
    648,014.40/972,021.60 = 611,272.80/x
  3. Step 3: Cross multiply
    648,014.40x = 972,021.60 × 611,272.80
  4. Step 4: Simplify right side
    648,014.40x = 594,170,365,092.48
  5. Step 5: Solve for x
    x = 594,170,365,092.48/648,014.40
  6. Step 6: Final answer
    x = 916,909.20

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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.