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Finding the Fourth Proportional to 865,620.15, 1,298,430.23 and 467,039.40

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Solution

The fourth proportional to 865,620.15, 1,298,430.23 and 467,039.40 is: 700,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,620.15 : 1,298,430.23 = 467,039.40 : x
  2. Step 2: Convert to fraction form
    865,620.15/1,298,430.23 = 467,039.40/x
  3. Step 3: Cross multiply
    865,620.15x = 1,298,430.23 × 467,039.40
  4. Step 4: Simplify right side
    865,620.15x = 606,418,073,225.87
  5. Step 5: Solve for x
    x = 606,418,073,225.87/865,620.15
  6. Step 6: Final answer
    x = 700,559.10

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1.5x scale

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.