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Finding the Fourth Proportional to 669,728.32, 924,221.28 and 367,915.84

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Solution

The fourth proportional to 669,728.32, 924,221.28 and 367,915.84 is: 507,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,728.32 : 924,221.28 = 367,915.84 : x
  2. Step 2: Convert to fraction form
    669,728.32/924,221.28 = 367,915.84/x
  3. Step 3: Cross multiply
    669,728.32x = 924,221.28 × 367,915.84
  4. Step 4: Simplify right side
    669,728.32x = 340,035,648,577.08
  5. Step 5: Solve for x
    x = 340,035,648,577.08/669,728.32
  6. Step 6: Final answer
    x = 507,721.77

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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.