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Finding the Fourth Proportional to 570,472.66, 854,447.62 and 390,130.73

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Solution

The fourth proportional to 570,472.66, 854,447.62 and 390,130.73 is: 584,333.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,472.66 : 854,447.62 = 390,130.73 : x
  2. Step 2: Convert to fraction form
    570,472.66/854,447.62 = 390,130.73/x
  3. Step 3: Cross multiply
    570,472.66x = 854,447.62 × 390,130.73
  4. Step 4: Simplify right side
    570,472.66x = 333,346,271,786.71
  5. Step 5: Solve for x
    x = 333,346,271,786.71/570,472.66
  6. Step 6: Final answer
    x = 584,333.47

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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.