Home / 724,817.10-1,087,225.65-455,378.70

Finding the Fourth Proportional to 724,817.10, 1,087,225.65 and 455,378.70

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Solution

The fourth proportional to 724,817.10, 1,087,225.65 and 455,378.70 is: 683,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,817.10 : 1,087,225.65 = 455,378.70 : x
  2. Step 2: Convert to fraction form
    724,817.10/1,087,225.65 = 455,378.70/x
  3. Step 3: Cross multiply
    724,817.10x = 1,087,225.65 × 455,378.70
  4. Step 4: Simplify right side
    724,817.10x = 495,099,403,103.66
  5. Step 5: Solve for x
    x = 495,099,403,103.66/724,817.10
  6. Step 6: Final answer
    x = 683,068.05

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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.