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Finding the Fourth Proportional to 445,903.20, 668,854.80 and 400,802.40

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Solution

The fourth proportional to 445,903.20, 668,854.80 and 400,802.40 is: 601,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,903.20 : 668,854.80 = 400,802.40 : x
  2. Step 2: Convert to fraction form
    445,903.20/668,854.80 = 400,802.40/x
  3. Step 3: Cross multiply
    445,903.20x = 668,854.80 × 400,802.40
  4. Step 4: Simplify right side
    445,903.20x = 268,078,609,091.52
  5. Step 5: Solve for x
    x = 268,078,609,091.52/445,903.20
  6. Step 6: Final answer
    x = 601,203.60

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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.