Home / 977,387.32-1,347,994.48-687,956.91

Finding the Fourth Proportional to 977,387.32, 1,347,994.48 and 687,956.91

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Solution

The fourth proportional to 977,387.32, 1,347,994.48 and 687,956.91 is: 948,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,387.32 : 1,347,994.48 = 687,956.91 : x
  2. Step 2: Convert to fraction form
    977,387.32/1,347,994.48 = 687,956.91/x
  3. Step 3: Cross multiply
    977,387.32x = 1,347,994.48 × 687,956.91
  4. Step 4: Simplify right side
    977,387.32x = 927,362,117,157.86
  5. Step 5: Solve for x
    x = 927,362,117,157.86/977,387.32
  6. Step 6: Final answer
    x = 948,817.42

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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.