Home / 927,988.10-1,280,638.71-520,180.64

Finding the Fourth Proportional to 927,988.10, 1,280,638.71 and 520,180.64

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Solution

The fourth proportional to 927,988.10, 1,280,638.71 and 520,180.64 is: 717,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,988.10 : 1,280,638.71 = 520,180.64 : x
  2. Step 2: Convert to fraction form
    927,988.10/1,280,638.71 = 520,180.64/x
  3. Step 3: Cross multiply
    927,988.10x = 1,280,638.71 × 520,180.64
  4. Step 4: Simplify right side
    927,988.10x = 666,163,457,373.38
  5. Step 5: Solve for x
    x = 666,163,457,373.38/927,988.10
  6. Step 6: Final answer
    x = 717,857.76

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Double scale
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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.