Home / 920,880.14-1,270,852.88-512,981.87

Finding the Fourth Proportional to 920,880.14, 1,270,852.88 and 512,981.87

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Solution

The fourth proportional to 920,880.14, 1,270,852.88 and 512,981.87 is: 707,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,880.14 : 1,270,852.88 = 512,981.87 : x
  2. Step 2: Convert to fraction form
    920,880.14/1,270,852.88 = 512,981.87/x
  3. Step 3: Cross multiply
    920,880.14x = 1,270,852.88 × 512,981.87
  4. Step 4: Simplify right side
    920,880.14x = 651,924,477,958.11
  5. Step 5: Solve for x
    x = 651,924,477,958.11/920,880.14
  6. Step 6: Final answer
    x = 707,936.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.