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Finding the Fourth Proportional to 496,010.40, 742,703.40 and 390,159.60

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Solution

The fourth proportional to 496,010.40, 742,703.40 and 390,159.60 is: 584,207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,010.40 : 742,703.40 = 390,159.60 : x
  2. Step 2: Convert to fraction form
    496,010.40/742,703.40 = 390,159.60/x
  3. Step 3: Cross multiply
    496,010.40x = 742,703.40 × 390,159.60
  4. Step 4: Simplify right side
    496,010.40x = 289,772,861,462.64
  5. Step 5: Solve for x
    x = 289,772,861,462.64/496,010.40
  6. Step 6: Final answer
    x = 584,207.23

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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.