Home / 628,795.53-867,710.61-342,316.62

Finding the Fourth Proportional to 628,795.53, 867,710.61 and 342,316.62

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Solution

The fourth proportional to 628,795.53, 867,710.61 and 342,316.62 is: 472,382.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,795.53 : 867,710.61 = 342,316.62 : x
  2. Step 2: Convert to fraction form
    628,795.53/867,710.61 = 342,316.62/x
  3. Step 3: Cross multiply
    628,795.53x = 867,710.61 × 342,316.62
  4. Step 4: Simplify right side
    628,795.53x = 297,031,763,153.34
  5. Step 5: Solve for x
    x = 297,031,763,153.34/628,795.53
  6. Step 6: Final answer
    x = 472,382.12

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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.