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Finding the Fourth Proportional to 669,698.76, 924,426.90 and 443,417.16

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Solution

The fourth proportional to 669,698.76, 924,426.90 and 443,417.16 is: 612,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,698.76 : 924,426.90 = 443,417.16 : x
  2. Step 2: Convert to fraction form
    669,698.76/924,426.90 = 443,417.16/x
  3. Step 3: Cross multiply
    669,698.76x = 924,426.90 × 443,417.16
  4. Step 4: Simplify right side
    669,698.76x = 409,906,750,625.60
  5. Step 5: Solve for x
    x = 409,906,750,625.60/669,698.76
  6. Step 6: Final answer
    x = 612,076.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.