Home / 645,530.16-966,424.32-577,148.40

Finding the Fourth Proportional to 645,530.16, 966,424.32 and 577,148.40

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Solution

The fourth proportional to 645,530.16, 966,424.32 and 577,148.40 is: 864,049.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,530.16 : 966,424.32 = 577,148.40 : x
  2. Step 2: Convert to fraction form
    645,530.16/966,424.32 = 577,148.40/x
  3. Step 3: Cross multiply
    645,530.16x = 966,424.32 × 577,148.40
  4. Step 4: Simplify right side
    645,530.16x = 557,770,250,009.09
  5. Step 5: Solve for x
    x = 557,770,250,009.09/645,530.16
  6. Step 6: Final answer
    x = 864,049.87

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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.