Home / 805,807,319.60-1,208,710,979.40-396,778,833.20

Finding the Fourth Proportional to 805,807,319.60, 1,208,710,979.40 and 396,778,833.20

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Solution

The fourth proportional to 805,807,319.60, 1,208,710,979.40 and 396,778,833.20 is: 595,168,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,807,319.60 : 1,208,710,979.40 = 396,778,833.20 : x
  2. Step 2: Convert to fraction form
    805,807,319.60/1,208,710,979.40 = 396,778,833.20/x
  3. Step 3: Cross multiply
    805,807,319.60x = 1,208,710,979.40 × 396,778,833.20
  4. Step 4: Simplify right side
    805,807,319.60x = 479,590,932,082,361,280
  5. Step 5: Solve for x
    x = 479,590,932,082,361,280/805,807,319.60
  6. Step 6: Final answer
    x = 595,168,249.80

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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.