Home / 763,503.60-1,144,276.20-426,543.60

Finding the Fourth Proportional to 763,503.60, 1,144,276.20 and 426,543.60

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Solution

The fourth proportional to 763,503.60, 1,144,276.20 and 426,543.60 is: 639,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,503.60 : 1,144,276.20 = 426,543.60 : x
  2. Step 2: Convert to fraction form
    763,503.60/1,144,276.20 = 426,543.60/x
  3. Step 3: Cross multiply
    763,503.60x = 1,144,276.20 × 426,543.60
  4. Step 4: Simplify right side
    763,503.60x = 488,083,689,742.32
  5. Step 5: Solve for x
    x = 488,083,689,742.32/763,503.60
  6. Step 6: Final answer
    x = 639,268.35

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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.