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Finding the Fourth Proportional to 526,658,641.68, 726,788,912.34 and 291,724,435.80

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Solution

The fourth proportional to 526,658,641.68, 726,788,912.34 and 291,724,435.80 is: 402,579,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,658,641.68 : 726,788,912.34 = 291,724,435.80 : x
  2. Step 2: Convert to fraction form
    526,658,641.68/726,788,912.34 = 291,724,435.80/x
  3. Step 3: Cross multiply
    526,658,641.68x = 726,788,912.34 × 291,724,435.80
  4. Step 4: Simplify right side
    526,658,641.68x = 212,022,085,398,082,176
  5. Step 5: Solve for x
    x = 212,022,085,398,082,176/526,658,641.68
  6. Step 6: Final answer
    x = 402,579,714.10

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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.