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Finding the Fourth Proportional to 604,555.80, 907,416.90 and 305,374.20

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Solution

The fourth proportional to 604,555.80, 907,416.90 and 305,374.20 is: 458,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,555.80 : 907,416.90 = 305,374.20 : x
  2. Step 2: Convert to fraction form
    604,555.80/907,416.90 = 305,374.20/x
  3. Step 3: Cross multiply
    604,555.80x = 907,416.90 × 305,374.20
  4. Step 4: Simplify right side
    604,555.80x = 277,101,709,903.98
  5. Step 5: Solve for x
    x = 277,101,709,903.98/604,555.80
  6. Step 6: Final answer
    x = 458,355.89

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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.