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Finding the Fourth Proportional to 648,639.60, 972,498.60 and 293,823.60

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Solution

The fourth proportional to 648,639.60, 972,498.60 and 293,823.60 is: 440,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,639.60 : 972,498.60 = 293,823.60 : x
  2. Step 2: Convert to fraction form
    648,639.60/972,498.60 = 293,823.60/x
  3. Step 3: Cross multiply
    648,639.60x = 972,498.60 × 293,823.60
  4. Step 4: Simplify right side
    648,639.60x = 285,743,039,646.96
  5. Step 5: Solve for x
    x = 285,743,039,646.96/648,639.60
  6. Step 6: Final answer
    x = 440,526.66

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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.