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Finding the Fourth Proportional to 637,239.48, 879,269.04 and 407,620.92

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Solution

The fourth proportional to 637,239.48, 879,269.04 and 407,620.92 is: 562,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,239.48 : 879,269.04 = 407,620.92 : x
  2. Step 2: Convert to fraction form
    637,239.48/879,269.04 = 407,620.92/x
  3. Step 3: Cross multiply
    637,239.48x = 879,269.04 × 407,620.92
  4. Step 4: Simplify right side
    637,239.48x = 358,408,455,012.32
  5. Step 5: Solve for x
    x = 358,408,455,012.32/637,239.48
  6. Step 6: Final answer
    x = 562,439.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.