Home / 1,119,852,030.15-1,679,778,045.23-420,342,813.90

Finding the Fourth Proportional to 1,119,852,030.15, 1,679,778,045.23 and 420,342,813.90

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Solution

The fourth proportional to 1,119,852,030.15, 1,679,778,045.23 and 420,342,813.90 is: 630,514,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,852,030.15 : 1,679,778,045.23 = 420,342,813.90 : x
  2. Step 2: Convert to fraction form
    1,119,852,030.15/1,679,778,045.23 = 420,342,813.90/x
  3. Step 3: Cross multiply
    1,119,852,030.15x = 1,679,778,045.23 × 420,342,813.90
  4. Step 4: Simplify right side
    1,119,852,030.15x = 706,082,630,257,317,888
  5. Step 5: Solve for x
    x = 706,082,630,257,317,888/1,119,852,030.15
  6. Step 6: Final answer
    x = 630,514,220.85

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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.