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Finding the Fourth Proportional to 509,244.35, 702,464.80 and 317,925.59

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Solution

The fourth proportional to 509,244.35, 702,464.80 and 317,925.59 is: 438,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,244.35 : 702,464.80 = 317,925.59 : x
  2. Step 2: Convert to fraction form
    509,244.35/702,464.80 = 317,925.59/x
  3. Step 3: Cross multiply
    509,244.35x = 702,464.80 × 317,925.59
  4. Step 4: Simplify right side
    509,244.35x = 223,331,535,994.23
  5. Step 5: Solve for x
    x = 223,331,535,994.23/509,244.35
  6. Step 6: Final answer
    x = 438,554.76

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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.