Home / 686,386.44-947,210.58-384,579.72

Finding the Fourth Proportional to 686,386.44, 947,210.58 and 384,579.72

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Solution

The fourth proportional to 686,386.44, 947,210.58 and 384,579.72 is: 530,718.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,386.44 : 947,210.58 = 384,579.72 : x
  2. Step 2: Convert to fraction form
    686,386.44/947,210.58 = 384,579.72/x
  3. Step 3: Cross multiply
    686,386.44x = 947,210.58 × 384,579.72
  4. Step 4: Simplify right side
    686,386.44x = 364,277,979,637.44
  5. Step 5: Solve for x
    x = 364,277,979,637.44/686,386.44
  6. Step 6: Final answer
    x = 530,718.50

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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.