Home / 628,016.20-942,024.30-487,875.40

Finding the Fourth Proportional to 628,016.20, 942,024.30 and 487,875.40

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Solution

The fourth proportional to 628,016.20, 942,024.30 and 487,875.40 is: 731,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,016.20 : 942,024.30 = 487,875.40 : x
  2. Step 2: Convert to fraction form
    628,016.20/942,024.30 = 487,875.40/x
  3. Step 3: Cross multiply
    628,016.20x = 942,024.30 × 487,875.40
  4. Step 4: Simplify right side
    628,016.20x = 459,590,482,172.22
  5. Step 5: Solve for x
    x = 459,590,482,172.22/628,016.20
  6. Step 6: Final answer
    x = 731,813.10

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Similar ratio
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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.