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Finding the Fourth Proportional to 620,398.04, 931,393.98 and 478,333.58

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Solution

The fourth proportional to 620,398.04, 931,393.98 and 478,333.58 is: 718,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,398.04 : 931,393.98 = 478,333.58 : x
  2. Step 2: Convert to fraction form
    620,398.04/931,393.98 = 478,333.58/x
  3. Step 3: Cross multiply
    620,398.04x = 931,393.98 × 478,333.58
  4. Step 4: Simplify right side
    620,398.04x = 445,517,012,186.88
  5. Step 5: Solve for x
    x = 445,517,012,186.88/620,398.04
  6. Step 6: Final answer
    x = 718,114.80

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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.