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Finding the Fourth Proportional to 648,012.40, 970,852.20 and 529,039.60

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Solution

The fourth proportional to 648,012.40, 970,852.20 and 529,039.60 is: 792,607.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,012.40 : 970,852.20 = 529,039.60 : x
  2. Step 2: Convert to fraction form
    648,012.40/970,852.20 = 529,039.60/x
  3. Step 3: Cross multiply
    648,012.40x = 970,852.20 × 529,039.60
  4. Step 4: Simplify right side
    648,012.40x = 513,619,259,547.12
  5. Step 5: Solve for x
    x = 513,619,259,547.12/648,012.40
  6. Step 6: Final answer
    x = 792,607.15

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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.