Home / 628,865.10-867,837.15-342,384.30

Finding the Fourth Proportional to 628,865.10, 867,837.15 and 342,384.30

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Solution

The fourth proportional to 628,865.10, 867,837.15 and 342,384.30 is: 472,492.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,865.10 : 867,837.15 = 342,384.30 : x
  2. Step 2: Convert to fraction form
    628,865.10/867,837.15 = 342,384.30/x
  3. Step 3: Cross multiply
    628,865.10x = 867,837.15 × 342,384.30
  4. Step 4: Simplify right side
    628,865.10x = 297,133,815,116.75
  5. Step 5: Solve for x
    x = 297,133,815,116.75/628,865.10
  6. Step 6: Final answer
    x = 472,492.14

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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.