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Finding the Fourth Proportional to 993,490.80, 1,492,885.80 and 870,063.60

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Solution

The fourth proportional to 993,490.80, 1,492,885.80 and 870,063.60 is: 1,307,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,490.80 : 1,492,885.80 = 870,063.60 : x
  2. Step 2: Convert to fraction form
    993,490.80/1,492,885.80 = 870,063.60/x
  3. Step 3: Cross multiply
    993,490.80x = 1,492,885.80 × 870,063.60
  4. Step 4: Simplify right side
    993,490.80x = 1,298,905,593,536.88
  5. Step 5: Solve for x
    x = 1,298,905,593,536.88/993,490.80
  6. Step 6: Final answer
    x = 1,307,415.82

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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.