Home / 645,971.04-891,416.88-359,503.20

Finding the Fourth Proportional to 645,971.04, 891,416.88 and 359,503.20

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Solution

The fourth proportional to 645,971.04, 891,416.88 and 359,503.20 is: 496,101.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,971.04 : 891,416.88 = 359,503.20 : x
  2. Step 2: Convert to fraction form
    645,971.04/891,416.88 = 359,503.20/x
  3. Step 3: Cross multiply
    645,971.04x = 891,416.88 × 359,503.20
  4. Step 4: Simplify right side
    645,971.04x = 320,467,220,894.02
  5. Step 5: Solve for x
    x = 320,467,220,894.02/645,971.04
  6. Step 6: Final answer
    x = 496,101.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.