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Finding the Fourth Proportional to 603,930.60, 904,802.40 and 478,396.80

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Solution

The fourth proportional to 603,930.60, 904,802.40 and 478,396.80 is: 716,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,930.60 : 904,802.40 = 478,396.80 : x
  2. Step 2: Convert to fraction form
    603,930.60/904,802.40 = 478,396.80/x
  3. Step 3: Cross multiply
    603,930.60x = 904,802.40 × 478,396.80
  4. Step 4: Simplify right side
    603,930.60x = 432,854,572,792.32
  5. Step 5: Solve for x
    x = 432,854,572,792.32/603,930.60
  6. Step 6: Final answer
    x = 716,729.00

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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.