Home / 912,844.60-1,369,266.90-407,404.60

Finding the Fourth Proportional to 912,844.60, 1,369,266.90 and 407,404.60

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Solution

The fourth proportional to 912,844.60, 1,369,266.90 and 407,404.60 is: 611,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,844.60 : 1,369,266.90 = 407,404.60 : x
  2. Step 2: Convert to fraction form
    912,844.60/1,369,266.90 = 407,404.60/x
  3. Step 3: Cross multiply
    912,844.60x = 1,369,266.90 × 407,404.60
  4. Step 4: Simplify right side
    912,844.60x = 557,845,633,687.74
  5. Step 5: Solve for x
    x = 557,845,633,687.74/912,844.60
  6. Step 6: Final answer
    x = 611,106.90

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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.