Home / 405,927.70-559,534.89-319,750.16

Finding the Fourth Proportional to 405,927.70, 559,534.89 and 319,750.16

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Solution

The fourth proportional to 405,927.70, 559,534.89 and 319,750.16 is: 440,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,927.70 : 559,534.89 = 319,750.16 : x
  2. Step 2: Convert to fraction form
    405,927.70/559,534.89 = 319,750.16/x
  3. Step 3: Cross multiply
    405,927.70x = 559,534.89 × 319,750.16
  4. Step 4: Simplify right side
    405,927.70x = 178,911,374,343.79
  5. Step 5: Solve for x
    x = 178,911,374,343.79/405,927.70
  6. Step 6: Final answer
    x = 440,746.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.