Home / 763,407.60-1,145,111.40-539,458.80

Finding the Fourth Proportional to 763,407.60, 1,145,111.40 and 539,458.80

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Solution

The fourth proportional to 763,407.60, 1,145,111.40 and 539,458.80 is: 809,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,407.60 : 1,145,111.40 = 539,458.80 : x
  2. Step 2: Convert to fraction form
    763,407.60/1,145,111.40 = 539,458.80/x
  3. Step 3: Cross multiply
    763,407.60x = 1,145,111.40 × 539,458.80
  4. Step 4: Simplify right side
    763,407.60x = 617,740,421,710.32
  5. Step 5: Solve for x
    x = 617,740,421,710.32/763,407.60
  6. Step 6: Final answer
    x = 809,188.20

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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.