Home / 628,770.08-867,702.85-342,290.09

Finding the Fourth Proportional to 628,770.08, 867,702.85 and 342,290.09

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Solution

The fourth proportional to 628,770.08, 867,702.85 and 342,290.09 is: 472,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,770.08 : 867,702.85 = 342,290.09 : x
  2. Step 2: Convert to fraction form
    628,770.08/867,702.85 = 342,290.09/x
  3. Step 3: Cross multiply
    628,770.08x = 867,702.85 × 342,290.09
  4. Step 4: Simplify right side
    628,770.08x = 297,006,090,301.51
  5. Step 5: Solve for x
    x = 297,006,090,301.51/628,770.08
  6. Step 6: Final answer
    x = 472,360.40

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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.