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Finding the Fourth Proportional to 870,655, 1,201,579.40 and 483,545.12

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Solution

The fourth proportional to 870,655, 1,201,579.40 and 483,545.12 is: 667,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,655 : 1,201,579.40 = 483,545.12 : x
  2. Step 2: Convert to fraction form
    870,655/1,201,579.40 = 483,545.12/x
  3. Step 3: Cross multiply
    870,655x = 1,201,579.40 × 483,545.12
  4. Step 4: Simplify right side
    870,655x = 581,017,855,162.53
  5. Step 5: Solve for x
    x = 581,017,855,162.53/870,655
  6. Step 6: Final answer
    x = 667,334.20

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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.