Home / 830,521,337.10-1,245,782,005.65-400,539,641.10

Finding the Fourth Proportional to 830,521,337.10, 1,245,782,005.65 and 400,539,641.10

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Solution

The fourth proportional to 830,521,337.10, 1,245,782,005.65 and 400,539,641.10 is: 600,809,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,521,337.10 : 1,245,782,005.65 = 400,539,641.10 : x
  2. Step 2: Convert to fraction form
    830,521,337.10/1,245,782,005.65 = 400,539,641.10/x
  3. Step 3: Cross multiply
    830,521,337.10x = 1,245,782,005.65 × 400,539,641.10
  4. Step 4: Simplify right side
    830,521,337.10x = 498,985,077,431,889,216
  5. Step 5: Solve for x
    x = 498,985,077,431,889,216/830,521,337.10
  6. Step 6: Final answer
    x = 600,809,461.65

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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.