Home / 686,386.72-947,213.04-384,582.88

Finding the Fourth Proportional to 686,386.72, 947,213.04 and 384,582.88

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Solution

The fourth proportional to 686,386.72, 947,213.04 and 384,582.88 is: 530,724.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,386.72 : 947,213.04 = 384,582.88 : x
  2. Step 2: Convert to fraction form
    686,386.72/947,213.04 = 384,582.88/x
  3. Step 3: Cross multiply
    686,386.72x = 947,213.04 × 384,582.88
  4. Step 4: Simplify right side
    686,386.72x = 364,281,918,896.76
  5. Step 5: Solve for x
    x = 364,281,918,896.76/686,386.72
  6. Step 6: Final answer
    x = 530,724.02

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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.