Home / 698,690.80-1,048,036.20-486,114.40

Finding the Fourth Proportional to 698,690.80, 1,048,036.20 and 486,114.40

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Solution

The fourth proportional to 698,690.80, 1,048,036.20 and 486,114.40 is: 729,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,690.80 : 1,048,036.20 = 486,114.40 : x
  2. Step 2: Convert to fraction form
    698,690.80/1,048,036.20 = 486,114.40/x
  3. Step 3: Cross multiply
    698,690.80x = 1,048,036.20 × 486,114.40
  4. Step 4: Simplify right side
    698,690.80x = 509,465,488,541.28
  5. Step 5: Solve for x
    x = 509,465,488,541.28/698,690.80
  6. Step 6: Final answer
    x = 729,171.60

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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.