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Finding the Fourth Proportional to 553,384.70, 830,077.05 and 313,252.10

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Solution

The fourth proportional to 553,384.70, 830,077.05 and 313,252.10 is: 469,878.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,384.70 : 830,077.05 = 313,252.10 : x
  2. Step 2: Convert to fraction form
    553,384.70/830,077.05 = 313,252.10/x
  3. Step 3: Cross multiply
    553,384.70x = 830,077.05 × 313,252.10
  4. Step 4: Simplify right side
    553,384.70x = 260,023,379,074.31
  5. Step 5: Solve for x
    x = 260,023,379,074.31/553,384.70
  6. Step 6: Final answer
    x = 469,878.15

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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.