Home / 919,397.84-1,379,094.36-288,310.64

Finding the Fourth Proportional to 919,397.84, 1,379,094.36 and 288,310.64

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Solution

The fourth proportional to 919,397.84, 1,379,094.36 and 288,310.64 is: 432,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,397.84 : 1,379,094.36 = 288,310.64 : x
  2. Step 2: Convert to fraction form
    919,397.84/1,379,094.36 = 288,310.64/x
  3. Step 3: Cross multiply
    919,397.84x = 1,379,094.36 × 288,310.64
  4. Step 4: Simplify right side
    919,397.84x = 397,607,577,551.99
  5. Step 5: Solve for x
    x = 397,607,577,551.99/919,397.84
  6. Step 6: Final answer
    x = 432,465.21

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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.