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Finding the Fourth Proportional to 612,608.32, 845,239.68 and 357,814.72

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Solution

The fourth proportional to 612,608.32, 845,239.68 and 357,814.72 is: 493,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,608.32 : 845,239.68 = 357,814.72 : x
  2. Step 2: Convert to fraction form
    612,608.32/845,239.68 = 357,814.72/x
  3. Step 3: Cross multiply
    612,608.32x = 845,239.68 × 357,814.72
  4. Step 4: Simplify right side
    612,608.32x = 302,439,199,432.09
  5. Step 5: Solve for x
    x = 302,439,199,432.09/612,608.32
  6. Step 6: Final answer
    x = 493,690.98

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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.