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Finding the Fourth Proportional to 604,859.70, 907,289.55 and 415,902.90

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Solution

The fourth proportional to 604,859.70, 907,289.55 and 415,902.90 is: 623,854.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,859.70 : 907,289.55 = 415,902.90 : x
  2. Step 2: Convert to fraction form
    604,859.70/907,289.55 = 415,902.90/x
  3. Step 3: Cross multiply
    604,859.70x = 907,289.55 × 415,902.90
  4. Step 4: Simplify right side
    604,859.70x = 377,344,354,984.70
  5. Step 5: Solve for x
    x = 377,344,354,984.70/604,859.70
  6. Step 6: Final answer
    x = 623,854.35

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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.