Home / 1,218,272.86-1,680,436.74-977,134.24

Finding the Fourth Proportional to 1,218,272.86, 1,680,436.74 and 977,134.24

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Solution

The fourth proportional to 1,218,272.86, 1,680,436.74 and 977,134.24 is: 1,347,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,272.86 : 1,680,436.74 = 977,134.24 : x
  2. Step 2: Convert to fraction form
    1,218,272.86/1,680,436.74 = 977,134.24/x
  3. Step 3: Cross multiply
    1,218,272.86x = 1,680,436.74 × 977,134.24
  4. Step 4: Simplify right side
    1,218,272.86x = 1,642,012,276,807.98
  5. Step 5: Solve for x
    x = 1,642,012,276,807.98/1,218,272.86
  6. Step 6: Final answer
    x = 1,347,819.80

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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.