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Finding the Fourth Proportional to 473,643.45, 653,620.34 and 258,778.91

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Solution

The fourth proportional to 473,643.45, 653,620.34 and 258,778.91 is: 357,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,643.45 : 653,620.34 = 258,778.91 : x
  2. Step 2: Convert to fraction form
    473,643.45/653,620.34 = 258,778.91/x
  3. Step 3: Cross multiply
    473,643.45x = 653,620.34 × 258,778.91
  4. Step 4: Simplify right side
    473,643.45x = 169,143,154,577.03
  5. Step 5: Solve for x
    x = 169,143,154,577.03/473,643.45
  6. Step 6: Final answer
    x = 357,110.72

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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.