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Finding the Fourth Proportional to 615,550.17, 921,624.85 and 315,384.42

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Solution

The fourth proportional to 615,550.17, 921,624.85 and 315,384.42 is: 472,205.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,550.17 : 921,624.85 = 315,384.42 : x
  2. Step 2: Convert to fraction form
    615,550.17/921,624.85 = 315,384.42/x
  3. Step 3: Cross multiply
    615,550.17x = 921,624.85 × 315,384.42
  4. Step 4: Simplify right side
    615,550.17x = 290,666,118,774.84
  5. Step 5: Solve for x
    x = 290,666,118,774.84/615,550.17
  6. Step 6: Final answer
    x = 472,205.41

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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.