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Finding the Fourth Proportional to 974,659.60, 1,461,770.70 and 640,048.60

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Solution

The fourth proportional to 974,659.60, 1,461,770.70 and 640,048.60 is: 959,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,659.60 : 1,461,770.70 = 640,048.60 : x
  2. Step 2: Convert to fraction form
    974,659.60/1,461,770.70 = 640,048.60/x
  3. Step 3: Cross multiply
    974,659.60x = 1,461,770.70 × 640,048.60
  4. Step 4: Simplify right side
    974,659.60x = 935,604,290,056.02
  5. Step 5: Solve for x
    x = 935,604,290,056.02/974,659.60
  6. Step 6: Final answer
    x = 959,929.28

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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.