Home / 698,963.40-1,048,445.10-418,336.20

Finding the Fourth Proportional to 698,963.40, 1,048,445.10 and 418,336.20

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Solution

The fourth proportional to 698,963.40, 1,048,445.10 and 418,336.20 is: 627,504.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,963.40 : 1,048,445.10 = 418,336.20 : x
  2. Step 2: Convert to fraction form
    698,963.40/1,048,445.10 = 418,336.20/x
  3. Step 3: Cross multiply
    698,963.40x = 1,048,445.10 × 418,336.20
  4. Step 4: Simplify right side
    698,963.40x = 438,602,539,042.62
  5. Step 5: Solve for x
    x = 438,602,539,042.62/698,963.40
  6. Step 6: Final answer
    x = 627,504.30

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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.