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Finding the Fourth Proportional to 424,920.65, 586,432.86 and 317,303.85

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Solution

The fourth proportional to 424,920.65, 586,432.86 and 317,303.85 is: 437,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,920.65 : 586,432.86 = 317,303.85 : x
  2. Step 2: Convert to fraction form
    424,920.65/586,432.86 = 317,303.85/x
  3. Step 3: Cross multiply
    424,920.65x = 586,432.86 × 317,303.85
  4. Step 4: Simplify right side
    424,920.65x = 186,077,401,955.06
  5. Step 5: Solve for x
    x = 186,077,401,955.06/424,920.65
  6. Step 6: Final answer
    x = 437,910.94

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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.