Home / 749,649.60-1,124,992.80-539,438.40

Finding the Fourth Proportional to 749,649.60, 1,124,992.80 and 539,438.40

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Solution

The fourth proportional to 749,649.60, 1,124,992.80 and 539,438.40 is: 809,530.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,649.60 : 1,124,992.80 = 539,438.40 : x
  2. Step 2: Convert to fraction form
    749,649.60/1,124,992.80 = 539,438.40/x
  3. Step 3: Cross multiply
    749,649.60x = 1,124,992.80 × 539,438.40
  4. Step 4: Simplify right side
    749,649.60x = 606,864,316,043.52
  5. Step 5: Solve for x
    x = 606,864,316,043.52/749,649.60
  6. Step 6: Final answer
    x = 809,530.63

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1.5x scale

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.