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Finding the Fourth Proportional to 602,401.80, 902,565.90 and 391,931.40

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Solution

The fourth proportional to 602,401.80, 902,565.90 and 391,931.40 is: 587,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,401.80 : 902,565.90 = 391,931.40 : x
  2. Step 2: Convert to fraction form
    602,401.80/902,565.90 = 391,931.40/x
  3. Step 3: Cross multiply
    602,401.80x = 902,565.90 × 391,931.40
  4. Step 4: Simplify right side
    602,401.80x = 353,743,916,779.26
  5. Step 5: Solve for x
    x = 353,743,916,779.26/602,401.80
  6. Step 6: Final answer
    x = 587,222.54

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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.