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Finding the Fourth Proportional to 553,607.40, 828,442.80 and 384,333.60

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Solution

The fourth proportional to 553,607.40, 828,442.80 and 384,333.60 is: 575,133.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,607.40 : 828,442.80 = 384,333.60 : x
  2. Step 2: Convert to fraction form
    553,607.40/828,442.80 = 384,333.60/x
  3. Step 3: Cross multiply
    553,607.40x = 828,442.80 × 384,333.60
  4. Step 4: Simplify right side
    553,607.40x = 318,398,403,718.08
  5. Step 5: Solve for x
    x = 318,398,403,718.08/553,607.40
  6. Step 6: Final answer
    x = 575,133.94

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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.