Home / 319,329,101.40-478,993,652.10-287,017,488.60

Finding the Fourth Proportional to 319,329,101.40, 478,993,652.10 and 287,017,488.60

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Solution

The fourth proportional to 319,329,101.40, 478,993,652.10 and 287,017,488.60 is: 430,526,232.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,329,101.40 : 478,993,652.10 = 287,017,488.60 : x
  2. Step 2: Convert to fraction form
    319,329,101.40/478,993,652.10 = 287,017,488.60/x
  3. Step 3: Cross multiply
    319,329,101.40x = 478,993,652.10 × 287,017,488.60
  4. Step 4: Simplify right side
    319,329,101.40x = 137,479,555,081,084,128
  5. Step 5: Solve for x
    x = 137,479,555,081,084,128/319,329,101.40
  6. Step 6: Final answer
    x = 430,526,232.90

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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.