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Finding the Fourth Proportional to 584,453.40, 876,680.10 and 426,989.40

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Solution

The fourth proportional to 584,453.40, 876,680.10 and 426,989.40 is: 640,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,453.40 : 876,680.10 = 426,989.40 : x
  2. Step 2: Convert to fraction form
    584,453.40/876,680.10 = 426,989.40/x
  3. Step 3: Cross multiply
    584,453.40x = 876,680.10 × 426,989.40
  4. Step 4: Simplify right side
    584,453.40x = 374,333,109,890.94
  5. Step 5: Solve for x
    x = 374,333,109,890.94/584,453.40
  6. Step 6: Final answer
    x = 640,484.10

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Half scale
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Double scale
Find fourth proportional to 584,454.40, 876,681.60 and 426,990.40
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.