Home / 390,374,462.90-585,540,140.60-285,437,341.13

Finding the Fourth Proportional to 390,374,462.90, 585,540,140.60 and 285,437,341.13

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Solution

The fourth proportional to 390,374,462.90, 585,540,140.60 and 285,437,341.13 is: 428,140,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,374,462.90 : 585,540,140.60 = 285,437,341.13 : x
  2. Step 2: Convert to fraction form
    390,374,462.90/585,540,140.60 = 285,437,341.13/x
  3. Step 3: Cross multiply
    390,374,462.90x = 585,540,140.60 × 285,437,341.13
  4. Step 4: Simplify right side
    390,374,462.90x = 167,135,020,857,750,368
  5. Step 5: Solve for x
    x = 167,135,020,857,750,368/390,374,462.90
  6. Step 6: Final answer
    x = 428,140,251.84

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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.