Home / 672,433.60-1,009,816.80-651,438.40

Finding the Fourth Proportional to 672,433.60, 1,009,816.80 and 651,438.40

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Solution

The fourth proportional to 672,433.60, 1,009,816.80 and 651,438.40 is: 978,287.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,433.60 : 1,009,816.80 = 651,438.40 : x
  2. Step 2: Convert to fraction form
    672,433.60/1,009,816.80 = 651,438.40/x
  3. Step 3: Cross multiply
    672,433.60x = 1,009,816.80 × 651,438.40
  4. Step 4: Simplify right side
    672,433.60x = 657,833,440,485.12
  5. Step 5: Solve for x
    x = 657,833,440,485.12/672,433.60
  6. Step 6: Final answer
    x = 978,287.58

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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.