Home / 656,401.08-906,135.90-384,431.16

Finding the Fourth Proportional to 656,401.08, 906,135.90 and 384,431.16

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Solution

The fourth proportional to 656,401.08, 906,135.90 and 384,431.16 is: 530,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,401.08 : 906,135.90 = 384,431.16 : x
  2. Step 2: Convert to fraction form
    656,401.08/906,135.90 = 384,431.16/x
  3. Step 3: Cross multiply
    656,401.08x = 906,135.90 × 384,431.16
  4. Step 4: Simplify right side
    656,401.08x = 348,346,875,154.64
  5. Step 5: Solve for x
    x = 348,346,875,154.64/656,401.08
  6. Step 6: Final answer
    x = 530,692.11

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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.