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Finding the Fourth Proportional to 550,244.40, 825,366.60 and 390,812.10

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Solution

The fourth proportional to 550,244.40, 825,366.60 and 390,812.10 is: 586,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,244.40 : 825,366.60 = 390,812.10 : x
  2. Step 2: Convert to fraction form
    550,244.40/825,366.60 = 390,812.10/x
  3. Step 3: Cross multiply
    550,244.40x = 825,366.60 × 390,812.10
  4. Step 4: Simplify right side
    550,244.40x = 322,563,254,215.86
  5. Step 5: Solve for x
    x = 322,563,254,215.86/550,244.40
  6. Step 6: Final answer
    x = 586,218.15

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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.