Home / 897,436.90-1,345,400.28-417,420.78

Finding the Fourth Proportional to 897,436.90, 1,345,400.28 and 417,420.78

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Solution

The fourth proportional to 897,436.90, 1,345,400.28 and 417,420.78 is: 625,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,436.90 : 1,345,400.28 = 417,420.78 : x
  2. Step 2: Convert to fraction form
    897,436.90/1,345,400.28 = 417,420.78/x
  3. Step 3: Cross multiply
    897,436.90x = 1,345,400.28 × 417,420.78
  4. Step 4: Simplify right side
    897,436.90x = 561,598,034,289.82
  5. Step 5: Solve for x
    x = 561,598,034,289.82/897,436.90
  6. Step 6: Final answer
    x = 625,779.97

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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.