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Finding the Fourth Proportional to 637,338,643.65, 879,506,701.92 and 365,803,809.75

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Solution

The fourth proportional to 637,338,643.65, 879,506,701.92 and 365,803,809.75 is: 504,797,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,338,643.65 : 879,506,701.92 = 365,803,809.75 : x
  2. Step 2: Convert to fraction form
    637,338,643.65/879,506,701.92 = 365,803,809.75/x
  3. Step 3: Cross multiply
    637,338,643.65x = 879,506,701.92 × 365,803,809.75
  4. Step 4: Simplify right side
    637,338,643.65x = 321,726,902,262,993,600
  5. Step 5: Solve for x
    x = 321,726,902,262,993,600/637,338,643.65
  6. Step 6: Final answer
    x = 504,797,418.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.