Home / 553,298.16-828,616.64-315,921.36

Finding the Fourth Proportional to 553,298.16, 828,616.64 and 315,921.36

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Solution

The fourth proportional to 553,298.16, 828,616.64 and 315,921.36 is: 473,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,298.16 : 828,616.64 = 315,921.36 : x
  2. Step 2: Convert to fraction form
    553,298.16/828,616.64 = 315,921.36/x
  3. Step 3: Cross multiply
    553,298.16x = 828,616.64 × 315,921.36
  4. Step 4: Simplify right side
    553,298.16x = 261,777,695,827.43
  5. Step 5: Solve for x
    x = 261,777,695,827.43/553,298.16
  6. Step 6: Final answer
    x = 473,122.30

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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.