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Finding the Fourth Proportional to 715,068.32, 985,985.61 and 456,605.42

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Solution

The fourth proportional to 715,068.32, 985,985.61 and 456,605.42 is: 629,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,068.32 : 985,985.61 = 456,605.42 : x
  2. Step 2: Convert to fraction form
    715,068.32/985,985.61 = 456,605.42/x
  3. Step 3: Cross multiply
    715,068.32x = 985,985.61 × 456,605.42
  4. Step 4: Simplify right side
    715,068.32x = 450,206,373,568.01
  5. Step 5: Solve for x
    x = 450,206,373,568.01/715,068.32
  6. Step 6: Final answer
    x = 629,599.10

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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.