Home / 912,001.64-1,368,149.46-280,915.16

Finding the Fourth Proportional to 912,001.64, 1,368,149.46 and 280,915.16

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Solution

The fourth proportional to 912,001.64, 1,368,149.46 and 280,915.16 is: 421,418.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,001.64 : 1,368,149.46 = 280,915.16 : x
  2. Step 2: Convert to fraction form
    912,001.64/1,368,149.46 = 280,915.16/x
  3. Step 3: Cross multiply
    912,001.64x = 1,368,149.46 × 280,915.16
  4. Step 4: Simplify right side
    912,001.64x = 384,333,924,459.81
  5. Step 5: Solve for x
    x = 384,333,924,459.81/912,001.64
  6. Step 6: Final answer
    x = 421,418.02

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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.