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Finding the Fourth Proportional to 604,904.40, 907,356.60 and 418,280.40

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Solution

The fourth proportional to 604,904.40, 907,356.60 and 418,280.40 is: 627,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,904.40 : 907,356.60 = 418,280.40 : x
  2. Step 2: Convert to fraction form
    604,904.40/907,356.60 = 418,280.40/x
  3. Step 3: Cross multiply
    604,904.40x = 907,356.60 × 418,280.40
  4. Step 4: Simplify right side
    604,904.40x = 379,529,481,590.64
  5. Step 5: Solve for x
    x = 379,529,481,590.64/604,904.40
  6. Step 6: Final answer
    x = 627,420.60

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Similar ratio
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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.