Home / 628,900.42-867,898.13-342,436.18

Finding the Fourth Proportional to 628,900.42, 867,898.13 and 342,436.18

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Solution

The fourth proportional to 628,900.42, 867,898.13 and 342,436.18 is: 472,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,900.42 : 867,898.13 = 342,436.18 : x
  2. Step 2: Convert to fraction form
    628,900.42/867,898.13 = 342,436.18/x
  3. Step 3: Cross multiply
    628,900.42x = 867,898.13 × 342,436.18
  4. Step 4: Simplify right side
    628,900.42x = 297,199,720,266.34
  5. Step 5: Solve for x
    x = 297,199,720,266.34/628,900.42
  6. Step 6: Final answer
    x = 472,570.40

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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.