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Finding the Fourth Proportional to 874,307.32, 1,310,542.08 and 400,603.12

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Solution

The fourth proportional to 874,307.32, 1,310,542.08 and 400,603.12 is: 600,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,307.32 : 1,310,542.08 = 400,603.12 : x
  2. Step 2: Convert to fraction form
    874,307.32/1,310,542.08 = 400,603.12/x
  3. Step 3: Cross multiply
    874,307.32x = 1,310,542.08 × 400,603.12
  4. Step 4: Simplify right side
    874,307.32x = 525,007,246,139.29
  5. Step 5: Solve for x
    x = 525,007,246,139.29/874,307.32
  6. Step 6: Final answer
    x = 600,483.64

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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.