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Finding the Fourth Proportional to 553,136.80, 828,830.40 and 463,907.20

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Solution

The fourth proportional to 553,136.80, 828,830.40 and 463,907.20 is: 695,127.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,136.80 : 828,830.40 = 463,907.20 : x
  2. Step 2: Convert to fraction form
    553,136.80/828,830.40 = 463,907.20/x
  3. Step 3: Cross multiply
    553,136.80x = 828,830.40 × 463,907.20
  4. Step 4: Simplify right side
    553,136.80x = 384,500,390,138.88
  5. Step 5: Solve for x
    x = 384,500,390,138.88/553,136.80
  6. Step 6: Final answer
    x = 695,127.12

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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.