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Finding the Fourth Proportional to 570,473.16, 854,448.36 and 390,131.23

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Solution

The fourth proportional to 570,473.16, 854,448.36 and 390,131.23 is: 584,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,473.16 : 854,448.36 = 390,131.23 : x
  2. Step 2: Convert to fraction form
    570,473.16/854,448.36 = 390,131.23/x
  3. Step 3: Cross multiply
    570,473.16x = 854,448.36 × 390,131.23
  4. Step 4: Simplify right side
    570,473.16x = 333,346,989,658.28
  5. Step 5: Solve for x
    x = 333,346,989,658.28/570,473.16
  6. Step 6: Final answer
    x = 584,334.22

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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.