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Finding the Fourth Proportional to 663,404.16, 915,478.08 and 376,950.40

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Solution

The fourth proportional to 663,404.16, 915,478.08 and 376,950.40 is: 520,180.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,404.16 : 915,478.08 = 376,950.40 : x
  2. Step 2: Convert to fraction form
    663,404.16/915,478.08 = 376,950.40/x
  3. Step 3: Cross multiply
    663,404.16x = 915,478.08 × 376,950.40
  4. Step 4: Simplify right side
    663,404.16x = 345,089,828,447.23
  5. Step 5: Solve for x
    x = 345,089,828,447.23/663,404.16
  6. Step 6: Final answer
    x = 520,180.38

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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.