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Finding the Fourth Proportional to 604,899.70, 907,349.55 and 289,971.70

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Solution

The fourth proportional to 604,899.70, 907,349.55 and 289,971.70 is: 434,957.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,899.70 : 907,349.55 = 289,971.70 : x
  2. Step 2: Convert to fraction form
    604,899.70/907,349.55 = 289,971.70/x
  3. Step 3: Cross multiply
    604,899.70x = 907,349.55 × 289,971.70
  4. Step 4: Simplify right side
    604,899.70x = 263,105,691,507.74
  5. Step 5: Solve for x
    x = 263,105,691,507.74/604,899.70
  6. Step 6: Final answer
    x = 434,957.55

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Half scale
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Double scale
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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.