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Finding the Fourth Proportional to 993,491.80, 1,492,887.30 and 870,064.60

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Solution

The fourth proportional to 993,491.80, 1,492,887.30 and 870,064.60 is: 1,307,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,491.80 : 1,492,887.30 = 870,064.60 : x
  2. Step 2: Convert to fraction form
    993,491.80/1,492,887.30 = 870,064.60/x
  3. Step 3: Cross multiply
    993,491.80x = 1,492,887.30 × 870,064.60
  4. Step 4: Simplify right side
    993,491.80x = 1,298,908,391,519.58
  5. Step 5: Solve for x
    x = 1,298,908,391,519.58/993,491.80
  6. Step 6: Final answer
    x = 1,307,417.32

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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.