Home / 708,128.53-977,217.52-385,838.63

Finding the Fourth Proportional to 708,128.53, 977,217.52 and 385,838.63

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Solution

The fourth proportional to 708,128.53, 977,217.52 and 385,838.63 is: 532,457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,128.53 : 977,217.52 = 385,838.63 : x
  2. Step 2: Convert to fraction form
    708,128.53/977,217.52 = 385,838.63/x
  3. Step 3: Cross multiply
    708,128.53x = 977,217.52 × 385,838.63
  4. Step 4: Simplify right side
    708,128.53x = 377,048,269,128.80
  5. Step 5: Solve for x
    x = 377,048,269,128.80/708,128.53
  6. Step 6: Final answer
    x = 532,457.39

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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.