Home / 390,834,033,101.85-585,915,288,592.45-135,830,286,250.96

Finding the Fourth Proportional to 390,834,033,101.85, 585,915,288,592.45 and 135,830,286,250.96

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Solution

The fourth proportional to 390,834,033,101.85, 585,915,288,592.45 and 135,830,286,250.96 is: 203,628,739,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,834,033,101.85 : 585,915,288,592.45 = 135,830,286,250.96 : x
  2. Step 2: Convert to fraction form
    390,834,033,101.85/585,915,288,592.45 = 135,830,286,250.96/x
  3. Step 3: Cross multiply
    390,834,033,101.85x = 585,915,288,592.45 × 135,830,286,250.96
  4. Step 4: Simplify right side
    390,834,033,101.85x = 79,585,041,368,326,317,539,328
  5. Step 5: Solve for x
    x = 79,585,041,368,326,317,539,328/390,834,033,101.85
  6. Step 6: Final answer
    x = 203,628,739,126.68

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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.