Home / 811,473.45-1,217,320.95-338,048.10

Finding the Fourth Proportional to 811,473.45, 1,217,320.95 and 338,048.10

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Solution

The fourth proportional to 811,473.45, 1,217,320.95 and 338,048.10 is: 507,118.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,473.45 : 1,217,320.95 = 338,048.10 : x
  2. Step 2: Convert to fraction form
    811,473.45/1,217,320.95 = 338,048.10/x
  3. Step 3: Cross multiply
    811,473.45x = 1,217,320.95 × 338,048.10
  4. Step 4: Simplify right side
    811,473.45x = 411,513,026,460.85
  5. Step 5: Solve for x
    x = 411,513,026,460.85/811,473.45
  6. Step 6: Final answer
    x = 507,118.29

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1.5x scale

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.