Home / 770,543.40-1,155,815.10-209,577.90

Finding the Fourth Proportional to 770,543.40, 1,155,815.10 and 209,577.90

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Solution

The fourth proportional to 770,543.40, 1,155,815.10 and 209,577.90 is: 314,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,543.40 : 1,155,815.10 = 209,577.90 : x
  2. Step 2: Convert to fraction form
    770,543.40/1,155,815.10 = 209,577.90/x
  3. Step 3: Cross multiply
    770,543.40x = 1,155,815.10 × 209,577.90
  4. Step 4: Simplify right side
    770,543.40x = 242,233,301,446.29
  5. Step 5: Solve for x
    x = 242,233,301,446.29/770,543.40
  6. Step 6: Final answer
    x = 314,366.85

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Double scale
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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.