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Finding the Fourth Proportional to 604,368.60, 905,459.40 and 478,834.80

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Solution

The fourth proportional to 604,368.60, 905,459.40 and 478,834.80 is: 717,385.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,368.60 : 905,459.40 = 478,834.80 : x
  2. Step 2: Convert to fraction form
    604,368.60/905,459.40 = 478,834.80/x
  3. Step 3: Cross multiply
    604,368.60x = 905,459.40 × 478,834.80
  4. Step 4: Simplify right side
    604,368.60x = 433,565,470,707.12
  5. Step 5: Solve for x
    x = 433,565,470,707.12/604,368.60
  6. Step 6: Final answer
    x = 717,385.83

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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.