Home / 756,435-1,133,886.78-490,364.40

Finding the Fourth Proportional to 756,435, 1,133,886.78 and 490,364.40

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Solution

The fourth proportional to 756,435, 1,133,886.78 and 490,364.40 is: 735,050.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,435 : 1,133,886.78 = 490,364.40 : x
  2. Step 2: Convert to fraction form
    756,435/1,133,886.78 = 490,364.40/x
  3. Step 3: Cross multiply
    756,435x = 1,133,886.78 × 490,364.40
  4. Step 4: Simplify right side
    756,435x = 556,017,710,542.63
  5. Step 5: Solve for x
    x = 556,017,710,542.63/756,435
  6. Step 6: Final answer
    x = 735,050.22

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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.