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Finding the Fourth Proportional to 875,234.40, 1,312,894.80 and 455,330.40

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Solution

The fourth proportional to 875,234.40, 1,312,894.80 and 455,330.40 is: 683,018.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,234.40 : 1,312,894.80 = 455,330.40 : x
  2. Step 2: Convert to fraction form
    875,234.40/1,312,894.80 = 455,330.40/x
  3. Step 3: Cross multiply
    875,234.40x = 1,312,894.80 × 455,330.40
  4. Step 4: Simplify right side
    875,234.40x = 597,800,914,441.92
  5. Step 5: Solve for x
    x = 597,800,914,441.92/875,234.40
  6. Step 6: Final answer
    x = 683,018.07

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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.